# flake8: noqa
# type: ignore
# Generated from SimpleSql.g4 by ANTLR 4.8
# encoding: utf-8
from ...._vendor.antlr4 import *
from io import StringIO
import sys
if sys.version_info[1] > 5:
	from typing import TextIO
else:
	from typing.io import TextIO


def serializedATN():
    with StringIO() as buf:
        buf.write("\3\u608b\ua72a\u8133\ub9ed\u417c\u3be7\u7786\u5964\3D")
        buf.write("\u01a5\4\2\t\2\4\3\t\3\4\4\t\4\4\5\t\5\4\6\t\6\4\7\t\7")
        buf.write("\4\b\t\b\4\t\t\t\4\n\t\n\4\13\t\13\4\f\t\f\4\r\t\r\4\16")
        buf.write("\t\16\4\17\t\17\4\20\t\20\4\21\t\21\4\22\t\22\4\23\t\23")
        buf.write("\4\24\t\24\4\25\t\25\4\26\t\26\4\27\t\27\4\30\t\30\4\31")
        buf.write("\t\31\4\32\t\32\4\33\t\33\4\34\t\34\4\35\t\35\4\36\t\36")
        buf.write("\4\37\t\37\4 \t \4!\t!\4\"\t\"\4#\t#\3\2\3\2\3\2\3\2\3")
        buf.write("\3\3\3\3\4\3\4\3\4\3\4\7\4Q\n\4\f\4\16\4T\13\4\5\4V\n")
        buf.write("\4\3\4\3\4\3\5\3\5\3\5\3\5\3\5\3\5\3\6\3\6\7\6b\n\6\f")
        buf.write("\6\16\6e\13\6\3\7\3\7\5\7i\n\7\3\7\3\7\3\b\3\b\5\bo\n")
        buf.write("\b\3\b\3\b\3\b\7\bt\n\b\f\b\16\bw\13\b\3\b\3\b\3\b\3\b")
        buf.write("\7\b}\n\b\f\b\16\b\u0080\13\b\5\b\u0082\n\b\3\b\3\b\5")
        buf.write("\b\u0086\n\b\3\b\3\b\3\b\5\b\u008b\n\b\3\b\3\b\5\b\u008f")
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        buf.write("\u0154\u015a\u015c\u015e\u0166\u016e\u0176\u017b\u0182")
        buf.write("\u019a")
        return buf.getvalue()


class SimpleSqlParser ( Parser ):

    grammarFileName = "SimpleSql.g4"

    atn = ATNDeserializer().deserialize(serializedATN())

    decisionsToDFA = [ DFA(ds, i) for i, ds in enumerate(atn.decisionToState) ]

    sharedContextCache = PredictionContextCache()

    literalNames = [ "<INVALID>", "';'", "','", "'('", "')'", "'*'", "'::'", 
                     "'.'", "'='", "'!='", "'<>'", "'<'", "'<='", "'>'", 
                     "'>='", "'+'", "'-'", "'/'", "'%'", "'||'", "'all'", 
                     "'and'", "'as'", "'asc'", "'by'", "'case'", "'cross'", 
                     "'desc'", "'distinct'", "'else'", "'end'", "'false'", 
                     "'from'", "'full'", "'group'", "'having'", "'in'", 
                     "'inner'", "'is'", "'join'", "'left'", "'like'", "'natural'", 
                     "'not'", "'null'", "'on'", "'or'", "'order'", "'outer'", 
                     "'over'", "'right'", "'select'", "'then'", "'true'", 
                     "'union'", "'when'", "'where'", "'with'" ]

    symbolicNames = [ "<INVALID>", "<INVALID>", "<INVALID>", "<INVALID>", 
                      "<INVALID>", "<INVALID>", "<INVALID>", "<INVALID>", 
                      "<INVALID>", "<INVALID>", "<INVALID>", "<INVALID>", 
                      "<INVALID>", "<INVALID>", "<INVALID>", "<INVALID>", 
                      "<INVALID>", "<INVALID>", "<INVALID>", "<INVALID>", 
                      "ALL", "AND", "AS", "ASC", "BY", "CASE", "CROSS", 
                      "DESC", "DISTINCT", "ELSE", "END", "FALSE", "FROM", 
                      "FULL", "GROUP", "HAVING", "IN", "INNER", "IS", "JOIN", 
                      "LEFT", "LIKE", "NATURAL", "NOT", "NULL", "ON", "OR", 
                      "ORDER", "OUTER", "OVER", "RIGHT", "SELECT", "THEN", 
                      "TRUE", "UNION", "WHEN", "WHERE", "WITH", "STRING", 
                      "INTEGER_VALUE", "DECIMAL_VALUE", "FLOAT_VALUE", "IDENTIFIER", 
                      "QUOTED_IDENTIFIER", "COMMENT", "BLOCK_COMMENT", "WS" ]

    RULE_singleStatement = 0
    RULE_select = 1
    RULE_cteSelect = 2
    RULE_cte = 3
    RULE_unionSelect = 4
    RULE_unionItem = 5
    RULE_primarySelect = 6
    RULE_selectItem = 7
    RULE_expression = 8
    RULE_booleanExpression = 9
    RULE_predicate = 10
    RULE_valueExpression = 11
    RULE_primaryExpression = 12
    RULE_simpleExpression = 13
    RULE_caseItem = 14
    RULE_over = 15
    RULE_sortItem = 16
    RULE_relation = 17
    RULE_groupBy = 18
    RULE_qualifiedName = 19
    RULE_identifierList = 20
    RULE_identifier = 21
    RULE_quotedIdentifier = 22
    RULE_number = 23
    RULE_string = 24
    RULE_null = 25
    RULE_true = 26
    RULE_false = 27
    RULE_setQuantifier = 28
    RULE_joinType = 29
    RULE_cmpOp = 30
    RULE_arithOp = 31
    RULE_unaryOp = 32
    RULE_unquotedIdentifier = 33

    ruleNames =  [ "singleStatement", "select", "cteSelect", "cte", "unionSelect", 
                   "unionItem", "primarySelect", "selectItem", "expression", 
                   "booleanExpression", "predicate", "valueExpression", 
                   "primaryExpression", "simpleExpression", "caseItem", 
                   "over", "sortItem", "relation", "groupBy", "qualifiedName", 
                   "identifierList", "identifier", "quotedIdentifier", "number", 
                   "string", "null", "true", "false", "setQuantifier", "joinType", 
                   "cmpOp", "arithOp", "unaryOp", "unquotedIdentifier" ]

    EOF = Token.EOF
    T__0=1
    T__1=2
    T__2=3
    T__3=4
    T__4=5
    T__5=6
    T__6=7
    T__7=8
    T__8=9
    T__9=10
    T__10=11
    T__11=12
    T__12=13
    T__13=14
    T__14=15
    T__15=16
    T__16=17
    T__17=18
    T__18=19
    ALL=20
    AND=21
    AS=22
    ASC=23
    BY=24
    CASE=25
    CROSS=26
    DESC=27
    DISTINCT=28
    ELSE=29
    END=30
    FALSE=31
    FROM=32
    FULL=33
    GROUP=34
    HAVING=35
    IN=36
    INNER=37
    IS=38
    JOIN=39
    LEFT=40
    LIKE=41
    NATURAL=42
    NOT=43
    NULL=44
    ON=45
    OR=46
    ORDER=47
    OUTER=48
    OVER=49
    RIGHT=50
    SELECT=51
    THEN=52
    TRUE=53
    UNION=54
    WHEN=55
    WHERE=56
    WITH=57
    STRING=58
    INTEGER_VALUE=59
    DECIMAL_VALUE=60
    FLOAT_VALUE=61
    IDENTIFIER=62
    QUOTED_IDENTIFIER=63
    COMMENT=64
    BLOCK_COMMENT=65
    WS=66

    def __init__(self, input:TokenStream, output:TextIO = sys.stdout):
        super().__init__(input, output)
        self.checkVersion("4.8")
        self._interp = ParserATNSimulator(self, self.atn, self.decisionsToDFA, self.sharedContextCache)
        self._predicates = None




    class SingleStatementContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def select(self):
            return self.getTypedRuleContext(SimpleSqlParser.SelectContext,0)


        def EOF(self):
            return self.getToken(SimpleSqlParser.EOF, 0)

        def getRuleIndex(self):
            return SimpleSqlParser.RULE_singleStatement

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterSingleStatement" ):
                listener.enterSingleStatement(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitSingleStatement" ):
                listener.exitSingleStatement(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitSingleStatement" ):
                return visitor.visitSingleStatement(self)
            else:
                return visitor.visitChildren(self)




    def singleStatement(self):

        localctx = SimpleSqlParser.SingleStatementContext(self, self._ctx, self.state)
        self.enterRule(localctx, 0, self.RULE_singleStatement)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 68
            self.select()
            self.state = 69
            self.match(SimpleSqlParser.T__0)
            self.state = 70
            self.match(SimpleSqlParser.EOF)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class SelectContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def cteSelect(self):
            return self.getTypedRuleContext(SimpleSqlParser.CteSelectContext,0)


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_select

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterSelect" ):
                listener.enterSelect(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitSelect" ):
                listener.exitSelect(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitSelect" ):
                return visitor.visitSelect(self)
            else:
                return visitor.visitChildren(self)




    def select(self):

        localctx = SimpleSqlParser.SelectContext(self, self._ctx, self.state)
        self.enterRule(localctx, 2, self.RULE_select)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 72
            self.cteSelect()
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class CteSelectContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def unionSelect(self):
            return self.getTypedRuleContext(SimpleSqlParser.UnionSelectContext,0)


        def WITH(self):
            return self.getToken(SimpleSqlParser.WITH, 0)

        def cte(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.CteContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.CteContext,i)


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_cteSelect

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterCteSelect" ):
                listener.enterCteSelect(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitCteSelect" ):
                listener.exitCteSelect(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitCteSelect" ):
                return visitor.visitCteSelect(self)
            else:
                return visitor.visitChildren(self)




    def cteSelect(self):

        localctx = SimpleSqlParser.CteSelectContext(self, self._ctx, self.state)
        self.enterRule(localctx, 4, self.RULE_cteSelect)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 83
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            if _la==SimpleSqlParser.WITH:
                self.state = 74
                self.match(SimpleSqlParser.WITH)
                self.state = 75
                self.cte()
                self.state = 80
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                while _la==SimpleSqlParser.T__1:
                    self.state = 76
                    self.match(SimpleSqlParser.T__1)
                    self.state = 77
                    self.cte()
                    self.state = 82
                    self._errHandler.sync(self)
                    _la = self._input.LA(1)



            self.state = 85
            self.unionSelect()
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class CteContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def identifier(self):
            return self.getTypedRuleContext(SimpleSqlParser.IdentifierContext,0)


        def AS(self):
            return self.getToken(SimpleSqlParser.AS, 0)

        def select(self):
            return self.getTypedRuleContext(SimpleSqlParser.SelectContext,0)


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_cte

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterCte" ):
                listener.enterCte(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitCte" ):
                listener.exitCte(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitCte" ):
                return visitor.visitCte(self)
            else:
                return visitor.visitChildren(self)




    def cte(self):

        localctx = SimpleSqlParser.CteContext(self, self._ctx, self.state)
        self.enterRule(localctx, 6, self.RULE_cte)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 87
            self.identifier()
            self.state = 88
            self.match(SimpleSqlParser.AS)
            self.state = 89
            self.match(SimpleSqlParser.T__2)
            self.state = 90
            self.select()
            self.state = 91
            self.match(SimpleSqlParser.T__3)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class UnionSelectContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def primarySelect(self):
            return self.getTypedRuleContext(SimpleSqlParser.PrimarySelectContext,0)


        def unionItem(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.UnionItemContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.UnionItemContext,i)


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_unionSelect

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterUnionSelect" ):
                listener.enterUnionSelect(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitUnionSelect" ):
                listener.exitUnionSelect(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitUnionSelect" ):
                return visitor.visitUnionSelect(self)
            else:
                return visitor.visitChildren(self)




    def unionSelect(self):

        localctx = SimpleSqlParser.UnionSelectContext(self, self._ctx, self.state)
        self.enterRule(localctx, 8, self.RULE_unionSelect)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 93
            self.primarySelect()
            self.state = 97
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            while _la==SimpleSqlParser.UNION:
                self.state = 94
                self.unionItem()
                self.state = 99
                self._errHandler.sync(self)
                _la = self._input.LA(1)

        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class UnionItemContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def UNION(self):
            return self.getToken(SimpleSqlParser.UNION, 0)

        def primarySelect(self):
            return self.getTypedRuleContext(SimpleSqlParser.PrimarySelectContext,0)


        def setQuantifier(self):
            return self.getTypedRuleContext(SimpleSqlParser.SetQuantifierContext,0)


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_unionItem

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterUnionItem" ):
                listener.enterUnionItem(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitUnionItem" ):
                listener.exitUnionItem(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitUnionItem" ):
                return visitor.visitUnionItem(self)
            else:
                return visitor.visitChildren(self)




    def unionItem(self):

        localctx = SimpleSqlParser.UnionItemContext(self, self._ctx, self.state)
        self.enterRule(localctx, 10, self.RULE_unionItem)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 100
            self.match(SimpleSqlParser.UNION)
            self.state = 102
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            if _la==SimpleSqlParser.ALL or _la==SimpleSqlParser.DISTINCT:
                self.state = 101
                self.setQuantifier()


            self.state = 104
            self.primarySelect()
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class PrimarySelectContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser
            self.where = None # BooleanExpressionContext
            self.having = None # BooleanExpressionContext

        def SELECT(self):
            return self.getToken(SimpleSqlParser.SELECT, 0)

        def selectItem(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.SelectItemContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.SelectItemContext,i)


        def setQuantifier(self):
            return self.getTypedRuleContext(SimpleSqlParser.SetQuantifierContext,0)


        def FROM(self):
            return self.getToken(SimpleSqlParser.FROM, 0)

        def relation(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.RelationContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.RelationContext,i)


        def WHERE(self):
            return self.getToken(SimpleSqlParser.WHERE, 0)

        def GROUP(self):
            return self.getToken(SimpleSqlParser.GROUP, 0)

        def BY(self, i:int=None):
            if i is None:
                return self.getTokens(SimpleSqlParser.BY)
            else:
                return self.getToken(SimpleSqlParser.BY, i)

        def groupBy(self):
            return self.getTypedRuleContext(SimpleSqlParser.GroupByContext,0)


        def HAVING(self):
            return self.getToken(SimpleSqlParser.HAVING, 0)

        def ORDER(self):
            return self.getToken(SimpleSqlParser.ORDER, 0)

        def sortItem(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.SortItemContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.SortItemContext,i)


        def booleanExpression(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.BooleanExpressionContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.BooleanExpressionContext,i)


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_primarySelect

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterPrimarySelect" ):
                listener.enterPrimarySelect(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitPrimarySelect" ):
                listener.exitPrimarySelect(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitPrimarySelect" ):
                return visitor.visitPrimarySelect(self)
            else:
                return visitor.visitChildren(self)




    def primarySelect(self):

        localctx = SimpleSqlParser.PrimarySelectContext(self, self._ctx, self.state)
        self.enterRule(localctx, 12, self.RULE_primarySelect)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 106
            self.match(SimpleSqlParser.SELECT)
            self.state = 108
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            if _la==SimpleSqlParser.ALL or _la==SimpleSqlParser.DISTINCT:
                self.state = 107
                self.setQuantifier()


            self.state = 110
            self.selectItem()
            self.state = 115
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            while _la==SimpleSqlParser.T__1:
                self.state = 111
                self.match(SimpleSqlParser.T__1)
                self.state = 112
                self.selectItem()
                self.state = 117
                self._errHandler.sync(self)
                _la = self._input.LA(1)

            self.state = 127
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            if _la==SimpleSqlParser.FROM:
                self.state = 118
                self.match(SimpleSqlParser.FROM)
                self.state = 119
                self.relation(0)
                self.state = 124
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                while _la==SimpleSqlParser.T__1:
                    self.state = 120
                    self.match(SimpleSqlParser.T__1)
                    self.state = 121
                    self.relation(0)
                    self.state = 126
                    self._errHandler.sync(self)
                    _la = self._input.LA(1)



            self.state = 131
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            if _la==SimpleSqlParser.WHERE:
                self.state = 129
                self.match(SimpleSqlParser.WHERE)
                self.state = 130
                localctx.where = self.booleanExpression(0)


            self.state = 136
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            if _la==SimpleSqlParser.GROUP:
                self.state = 133
                self.match(SimpleSqlParser.GROUP)
                self.state = 134
                self.match(SimpleSqlParser.BY)
                self.state = 135
                self.groupBy()


            self.state = 140
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            if _la==SimpleSqlParser.HAVING:
                self.state = 138
                self.match(SimpleSqlParser.HAVING)
                self.state = 139
                localctx.having = self.booleanExpression(0)


            self.state = 152
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            if _la==SimpleSqlParser.ORDER:
                self.state = 142
                self.match(SimpleSqlParser.ORDER)
                self.state = 143
                self.match(SimpleSqlParser.BY)
                self.state = 144
                self.sortItem()
                self.state = 149
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                while _la==SimpleSqlParser.T__1:
                    self.state = 145
                    self.match(SimpleSqlParser.T__1)
                    self.state = 146
                    self.sortItem()
                    self.state = 151
                    self._errHandler.sync(self)
                    _la = self._input.LA(1)



        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class SelectItemContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_selectItem

     
        def copyFrom(self, ctx:ParserRuleContext):
            super().copyFrom(ctx)



    class ExpressionSelectItemContext(SelectItemContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.SelectItemContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def expression(self):
            return self.getTypedRuleContext(SimpleSqlParser.ExpressionContext,0)

        def identifier(self):
            return self.getTypedRuleContext(SimpleSqlParser.IdentifierContext,0)

        def AS(self):
            return self.getToken(SimpleSqlParser.AS, 0)

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterExpressionSelectItem" ):
                listener.enterExpressionSelectItem(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitExpressionSelectItem" ):
                listener.exitExpressionSelectItem(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitExpressionSelectItem" ):
                return visitor.visitExpressionSelectItem(self)
            else:
                return visitor.visitChildren(self)


    class AllSelectItemContext(SelectItemContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.SelectItemContext
            super().__init__(parser)
            self.copyFrom(ctx)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterAllSelectItem" ):
                listener.enterAllSelectItem(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitAllSelectItem" ):
                listener.exitAllSelectItem(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitAllSelectItem" ):
                return visitor.visitAllSelectItem(self)
            else:
                return visitor.visitChildren(self)



    def selectItem(self):

        localctx = SimpleSqlParser.SelectItemContext(self, self._ctx, self.state)
        self.enterRule(localctx, 14, self.RULE_selectItem)
        self._la = 0 # Token type
        try:
            self.state = 162
            self._errHandler.sync(self)
            token = self._input.LA(1)
            if token in [SimpleSqlParser.T__4]:
                localctx = SimpleSqlParser.AllSelectItemContext(self, localctx)
                self.enterOuterAlt(localctx, 1)
                self.state = 154
                self.match(SimpleSqlParser.T__4)
                pass
            elif token in [SimpleSqlParser.T__2, SimpleSqlParser.T__14, SimpleSqlParser.T__15, SimpleSqlParser.CASE, SimpleSqlParser.FALSE, SimpleSqlParser.LEFT, SimpleSqlParser.NOT, SimpleSqlParser.NULL, SimpleSqlParser.RIGHT, SimpleSqlParser.TRUE, SimpleSqlParser.STRING, SimpleSqlParser.INTEGER_VALUE, SimpleSqlParser.DECIMAL_VALUE, SimpleSqlParser.FLOAT_VALUE, SimpleSqlParser.IDENTIFIER, SimpleSqlParser.QUOTED_IDENTIFIER]:
                localctx = SimpleSqlParser.ExpressionSelectItemContext(self, localctx)
                self.enterOuterAlt(localctx, 2)
                self.state = 155
                self.expression()
                self.state = 160
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                if (((_la) & ~0x3f) == 0 and ((1 << _la) & ((1 << SimpleSqlParser.AS) | (1 << SimpleSqlParser.LEFT) | (1 << SimpleSqlParser.RIGHT) | (1 << SimpleSqlParser.IDENTIFIER) | (1 << SimpleSqlParser.QUOTED_IDENTIFIER))) != 0):
                    self.state = 157
                    self._errHandler.sync(self)
                    _la = self._input.LA(1)
                    if _la==SimpleSqlParser.AS:
                        self.state = 156
                        self.match(SimpleSqlParser.AS)


                    self.state = 159
                    self.identifier()


                pass
            else:
                raise NoViableAltException(self)

        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class ExpressionContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def booleanExpression(self):
            return self.getTypedRuleContext(SimpleSqlParser.BooleanExpressionContext,0)


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_expression

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterExpression" ):
                listener.enterExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitExpression" ):
                listener.exitExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitExpression" ):
                return visitor.visitExpression(self)
            else:
                return visitor.visitChildren(self)




    def expression(self):

        localctx = SimpleSqlParser.ExpressionContext(self, self._ctx, self.state)
        self.enterRule(localctx, 16, self.RULE_expression)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 164
            self.booleanExpression(0)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class BooleanExpressionContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_booleanExpression

     
        def copyFrom(self, ctx:ParserRuleContext):
            super().copyFrom(ctx)


    class BinaryBooleanExpressionContext(BooleanExpressionContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.BooleanExpressionContext
            super().__init__(parser)
            self.op = None # Token
            self.copyFrom(ctx)

        def booleanExpression(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.BooleanExpressionContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.BooleanExpressionContext,i)

        def AND(self):
            return self.getToken(SimpleSqlParser.AND, 0)
        def OR(self):
            return self.getToken(SimpleSqlParser.OR, 0)

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterBinaryBooleanExpression" ):
                listener.enterBinaryBooleanExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitBinaryBooleanExpression" ):
                listener.exitBinaryBooleanExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitBinaryBooleanExpression" ):
                return visitor.visitBinaryBooleanExpression(self)
            else:
                return visitor.visitChildren(self)


    class PredicatedBooleanExpressionContext(BooleanExpressionContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.BooleanExpressionContext
            super().__init__(parser)
            self._valueExpression = None # ValueExpressionContext
            self.copyFrom(ctx)

        def valueExpression(self):
            return self.getTypedRuleContext(SimpleSqlParser.ValueExpressionContext,0)

        def predicate(self):
            return self.getTypedRuleContext(SimpleSqlParser.PredicateContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterPredicatedBooleanExpression" ):
                listener.enterPredicatedBooleanExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitPredicatedBooleanExpression" ):
                listener.exitPredicatedBooleanExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitPredicatedBooleanExpression" ):
                return visitor.visitPredicatedBooleanExpression(self)
            else:
                return visitor.visitChildren(self)


    class UnaryBooleanExpressionContext(BooleanExpressionContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.BooleanExpressionContext
            super().__init__(parser)
            self.op = None # Token
            self.copyFrom(ctx)

        def booleanExpression(self):
            return self.getTypedRuleContext(SimpleSqlParser.BooleanExpressionContext,0)

        def NOT(self):
            return self.getToken(SimpleSqlParser.NOT, 0)

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterUnaryBooleanExpression" ):
                listener.enterUnaryBooleanExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitUnaryBooleanExpression" ):
                listener.exitUnaryBooleanExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitUnaryBooleanExpression" ):
                return visitor.visitUnaryBooleanExpression(self)
            else:
                return visitor.visitChildren(self)


    class CastBooleanExpressionContext(BooleanExpressionContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.BooleanExpressionContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def booleanExpression(self):
            return self.getTypedRuleContext(SimpleSqlParser.BooleanExpressionContext,0)

        def identifier(self):
            return self.getTypedRuleContext(SimpleSqlParser.IdentifierContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterCastBooleanExpression" ):
                listener.enterCastBooleanExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitCastBooleanExpression" ):
                listener.exitCastBooleanExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitCastBooleanExpression" ):
                return visitor.visitCastBooleanExpression(self)
            else:
                return visitor.visitChildren(self)



    def booleanExpression(self, _p:int=0):
        _parentctx = self._ctx
        _parentState = self.state
        localctx = SimpleSqlParser.BooleanExpressionContext(self, self._ctx, _parentState)
        _prevctx = localctx
        _startState = 18
        self.enterRecursionRule(localctx, 18, self.RULE_booleanExpression, _p)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 173
            self._errHandler.sync(self)
            token = self._input.LA(1)
            if token in [SimpleSqlParser.T__2, SimpleSqlParser.T__14, SimpleSqlParser.T__15, SimpleSqlParser.CASE, SimpleSqlParser.FALSE, SimpleSqlParser.LEFT, SimpleSqlParser.NULL, SimpleSqlParser.RIGHT, SimpleSqlParser.TRUE, SimpleSqlParser.STRING, SimpleSqlParser.INTEGER_VALUE, SimpleSqlParser.DECIMAL_VALUE, SimpleSqlParser.FLOAT_VALUE, SimpleSqlParser.IDENTIFIER, SimpleSqlParser.QUOTED_IDENTIFIER]:
                localctx = SimpleSqlParser.PredicatedBooleanExpressionContext(self, localctx)
                self._ctx = localctx
                _prevctx = localctx

                self.state = 167
                localctx._valueExpression = self.valueExpression(0)
                self.state = 169
                self._errHandler.sync(self)
                la_ = self._interp.adaptivePredict(self._input,16,self._ctx)
                if la_ == 1:
                    self.state = 168
                    self.predicate(localctx._valueExpression)


                pass
            elif token in [SimpleSqlParser.NOT]:
                localctx = SimpleSqlParser.UnaryBooleanExpressionContext(self, localctx)
                self._ctx = localctx
                _prevctx = localctx
                self.state = 171
                localctx.op = self.match(SimpleSqlParser.NOT)
                self.state = 172
                self.booleanExpression(3)
                pass
            else:
                raise NoViableAltException(self)

            self._ctx.stop = self._input.LT(-1)
            self.state = 183
            self._errHandler.sync(self)
            _alt = self._interp.adaptivePredict(self._input,19,self._ctx)
            while _alt!=2 and _alt!=ATN.INVALID_ALT_NUMBER:
                if _alt==1:
                    if self._parseListeners is not None:
                        self.triggerExitRuleEvent()
                    _prevctx = localctx
                    self.state = 181
                    self._errHandler.sync(self)
                    la_ = self._interp.adaptivePredict(self._input,18,self._ctx)
                    if la_ == 1:
                        localctx = SimpleSqlParser.BinaryBooleanExpressionContext(self, SimpleSqlParser.BooleanExpressionContext(self, _parentctx, _parentState))
                        self.pushNewRecursionContext(localctx, _startState, self.RULE_booleanExpression)
                        self.state = 175
                        if not self.precpred(self._ctx, 2):
                            from antlr4.error.Errors import FailedPredicateException
                            raise FailedPredicateException(self, "self.precpred(self._ctx, 2)")
                        self.state = 176
                        localctx.op = self._input.LT(1)
                        _la = self._input.LA(1)
                        if not(_la==SimpleSqlParser.AND or _la==SimpleSqlParser.OR):
                            localctx.op = self._errHandler.recoverInline(self)
                        else:
                            self._errHandler.reportMatch(self)
                            self.consume()
                        self.state = 177
                        self.booleanExpression(3)
                        pass

                    elif la_ == 2:
                        localctx = SimpleSqlParser.CastBooleanExpressionContext(self, SimpleSqlParser.BooleanExpressionContext(self, _parentctx, _parentState))
                        self.pushNewRecursionContext(localctx, _startState, self.RULE_booleanExpression)
                        self.state = 178
                        if not self.precpred(self._ctx, 1):
                            from antlr4.error.Errors import FailedPredicateException
                            raise FailedPredicateException(self, "self.precpred(self._ctx, 1)")
                        self.state = 179
                        self.match(SimpleSqlParser.T__5)
                        self.state = 180
                        self.identifier()
                        pass

             
                self.state = 185
                self._errHandler.sync(self)
                _alt = self._interp.adaptivePredict(self._input,19,self._ctx)

        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.unrollRecursionContexts(_parentctx)
        return localctx


    class PredicateContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1, value:ParserRuleContext=None):
            super().__init__(parent, invokingState)
            self.parser = parser
            self.value = None
            self.value = value


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_predicate

     
        def copyFrom(self, ctx:ParserRuleContext):
            super().copyFrom(ctx)
            self.value = ctx.value



    class IsNullPredicateContext(PredicateContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.PredicateContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def IS(self):
            return self.getToken(SimpleSqlParser.IS, 0)
        def NULL(self):
            return self.getToken(SimpleSqlParser.NULL, 0)
        def NOT(self):
            return self.getToken(SimpleSqlParser.NOT, 0)

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterIsNullPredicate" ):
                listener.enterIsNullPredicate(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitIsNullPredicate" ):
                listener.exitIsNullPredicate(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitIsNullPredicate" ):
                return visitor.visitIsNullPredicate(self)
            else:
                return visitor.visitChildren(self)


    class CmpPredicateContext(PredicateContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.PredicateContext
            super().__init__(parser)
            self.right = None # ValueExpressionContext
            self.copyFrom(ctx)

        def cmpOp(self):
            return self.getTypedRuleContext(SimpleSqlParser.CmpOpContext,0)

        def valueExpression(self):
            return self.getTypedRuleContext(SimpleSqlParser.ValueExpressionContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterCmpPredicate" ):
                listener.enterCmpPredicate(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitCmpPredicate" ):
                listener.exitCmpPredicate(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitCmpPredicate" ):
                return visitor.visitCmpPredicate(self)
            else:
                return visitor.visitChildren(self)


    class LikePredicateContext(PredicateContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.PredicateContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def LIKE(self):
            return self.getToken(SimpleSqlParser.LIKE, 0)
        def expression(self):
            return self.getTypedRuleContext(SimpleSqlParser.ExpressionContext,0)

        def NOT(self):
            return self.getToken(SimpleSqlParser.NOT, 0)

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterLikePredicate" ):
                listener.enterLikePredicate(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitLikePredicate" ):
                listener.exitLikePredicate(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitLikePredicate" ):
                return visitor.visitLikePredicate(self)
            else:
                return visitor.visitChildren(self)


    class InSelectPredicateContext(PredicateContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.PredicateContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def IN(self):
            return self.getToken(SimpleSqlParser.IN, 0)
        def select(self):
            return self.getTypedRuleContext(SimpleSqlParser.SelectContext,0)

        def NOT(self):
            return self.getToken(SimpleSqlParser.NOT, 0)

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterInSelectPredicate" ):
                listener.enterInSelectPredicate(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitInSelectPredicate" ):
                listener.exitInSelectPredicate(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitInSelectPredicate" ):
                return visitor.visitInSelectPredicate(self)
            else:
                return visitor.visitChildren(self)


    class InListPredicateContext(PredicateContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.PredicateContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def IN(self):
            return self.getToken(SimpleSqlParser.IN, 0)
        def expression(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.ExpressionContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.ExpressionContext,i)

        def NOT(self):
            return self.getToken(SimpleSqlParser.NOT, 0)

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterInListPredicate" ):
                listener.enterInListPredicate(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitInListPredicate" ):
                listener.exitInListPredicate(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitInListPredicate" ):
                return visitor.visitInListPredicate(self)
            else:
                return visitor.visitChildren(self)



    def predicate(self, value:ParserRuleContext):

        localctx = SimpleSqlParser.PredicateContext(self, self._ctx, self.state, value)
        self.enterRule(localctx, 20, self.RULE_predicate)
        self._la = 0 # Token type
        try:
            self.state = 222
            self._errHandler.sync(self)
            la_ = self._interp.adaptivePredict(self._input,25,self._ctx)
            if la_ == 1:
                localctx = SimpleSqlParser.CmpPredicateContext(self, localctx)
                self.enterOuterAlt(localctx, 1)
                self.state = 186
                self.cmpOp()
                self.state = 187
                localctx.right = self.valueExpression(0)
                pass

            elif la_ == 2:
                localctx = SimpleSqlParser.IsNullPredicateContext(self, localctx)
                self.enterOuterAlt(localctx, 2)
                self.state = 189
                self.match(SimpleSqlParser.IS)
                self.state = 191
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                if _la==SimpleSqlParser.NOT:
                    self.state = 190
                    self.match(SimpleSqlParser.NOT)


                self.state = 193
                self.match(SimpleSqlParser.NULL)
                pass

            elif la_ == 3:
                localctx = SimpleSqlParser.InListPredicateContext(self, localctx)
                self.enterOuterAlt(localctx, 3)
                self.state = 195
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                if _la==SimpleSqlParser.NOT:
                    self.state = 194
                    self.match(SimpleSqlParser.NOT)


                self.state = 197
                self.match(SimpleSqlParser.IN)
                self.state = 198
                self.match(SimpleSqlParser.T__2)
                self.state = 199
                self.expression()
                self.state = 204
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                while _la==SimpleSqlParser.T__1:
                    self.state = 200
                    self.match(SimpleSqlParser.T__1)
                    self.state = 201
                    self.expression()
                    self.state = 206
                    self._errHandler.sync(self)
                    _la = self._input.LA(1)

                self.state = 207
                self.match(SimpleSqlParser.T__3)
                pass

            elif la_ == 4:
                localctx = SimpleSqlParser.InSelectPredicateContext(self, localctx)
                self.enterOuterAlt(localctx, 4)
                self.state = 210
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                if _la==SimpleSqlParser.NOT:
                    self.state = 209
                    self.match(SimpleSqlParser.NOT)


                self.state = 212
                self.match(SimpleSqlParser.IN)
                self.state = 213
                self.match(SimpleSqlParser.T__2)
                self.state = 214
                self.select()
                self.state = 215
                self.match(SimpleSqlParser.T__3)
                pass

            elif la_ == 5:
                localctx = SimpleSqlParser.LikePredicateContext(self, localctx)
                self.enterOuterAlt(localctx, 5)
                self.state = 218
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                if _la==SimpleSqlParser.NOT:
                    self.state = 217
                    self.match(SimpleSqlParser.NOT)


                self.state = 220
                self.match(SimpleSqlParser.LIKE)
                self.state = 221
                self.expression()
                pass


        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class ValueExpressionContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_valueExpression

     
        def copyFrom(self, ctx:ParserRuleContext):
            super().copyFrom(ctx)


    class PrimaryValueExpressionContext(ValueExpressionContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.ValueExpressionContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def primaryExpression(self):
            return self.getTypedRuleContext(SimpleSqlParser.PrimaryExpressionContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterPrimaryValueExpression" ):
                listener.enterPrimaryValueExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitPrimaryValueExpression" ):
                listener.exitPrimaryValueExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitPrimaryValueExpression" ):
                return visitor.visitPrimaryValueExpression(self)
            else:
                return visitor.visitChildren(self)


    class UnaryValueExpressionContext(ValueExpressionContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.ValueExpressionContext
            super().__init__(parser)
            self.op = None # UnaryOpContext
            self.copyFrom(ctx)

        def valueExpression(self):
            return self.getTypedRuleContext(SimpleSqlParser.ValueExpressionContext,0)

        def unaryOp(self):
            return self.getTypedRuleContext(SimpleSqlParser.UnaryOpContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterUnaryValueExpression" ):
                listener.enterUnaryValueExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitUnaryValueExpression" ):
                listener.exitUnaryValueExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitUnaryValueExpression" ):
                return visitor.visitUnaryValueExpression(self)
            else:
                return visitor.visitChildren(self)


    class ArithValueExpressionContext(ValueExpressionContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.ValueExpressionContext
            super().__init__(parser)
            self.left = None # ValueExpressionContext
            self.op = None # ArithOpContext
            self.right = None # ValueExpressionContext
            self.copyFrom(ctx)

        def valueExpression(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.ValueExpressionContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.ValueExpressionContext,i)

        def arithOp(self):
            return self.getTypedRuleContext(SimpleSqlParser.ArithOpContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterArithValueExpression" ):
                listener.enterArithValueExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitArithValueExpression" ):
                listener.exitArithValueExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitArithValueExpression" ):
                return visitor.visitArithValueExpression(self)
            else:
                return visitor.visitChildren(self)



    def valueExpression(self, _p:int=0):
        _parentctx = self._ctx
        _parentState = self.state
        localctx = SimpleSqlParser.ValueExpressionContext(self, self._ctx, _parentState)
        _prevctx = localctx
        _startState = 22
        self.enterRecursionRule(localctx, 22, self.RULE_valueExpression, _p)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 229
            self._errHandler.sync(self)
            token = self._input.LA(1)
            if token in [SimpleSqlParser.T__2, SimpleSqlParser.CASE, SimpleSqlParser.FALSE, SimpleSqlParser.LEFT, SimpleSqlParser.NULL, SimpleSqlParser.RIGHT, SimpleSqlParser.TRUE, SimpleSqlParser.STRING, SimpleSqlParser.INTEGER_VALUE, SimpleSqlParser.DECIMAL_VALUE, SimpleSqlParser.FLOAT_VALUE, SimpleSqlParser.IDENTIFIER, SimpleSqlParser.QUOTED_IDENTIFIER]:
                localctx = SimpleSqlParser.PrimaryValueExpressionContext(self, localctx)
                self._ctx = localctx
                _prevctx = localctx

                self.state = 225
                self.primaryExpression()
                pass
            elif token in [SimpleSqlParser.T__14, SimpleSqlParser.T__15]:
                localctx = SimpleSqlParser.UnaryValueExpressionContext(self, localctx)
                self._ctx = localctx
                _prevctx = localctx
                self.state = 226
                localctx.op = self.unaryOp()
                self.state = 227
                self.valueExpression(2)
                pass
            else:
                raise NoViableAltException(self)

            self._ctx.stop = self._input.LT(-1)
            self.state = 237
            self._errHandler.sync(self)
            _alt = self._interp.adaptivePredict(self._input,27,self._ctx)
            while _alt!=2 and _alt!=ATN.INVALID_ALT_NUMBER:
                if _alt==1:
                    if self._parseListeners is not None:
                        self.triggerExitRuleEvent()
                    _prevctx = localctx
                    localctx = SimpleSqlParser.ArithValueExpressionContext(self, SimpleSqlParser.ValueExpressionContext(self, _parentctx, _parentState))
                    localctx.left = _prevctx
                    self.pushNewRecursionContext(localctx, _startState, self.RULE_valueExpression)
                    self.state = 231
                    if not self.precpred(self._ctx, 1):
                        from antlr4.error.Errors import FailedPredicateException
                        raise FailedPredicateException(self, "self.precpred(self._ctx, 1)")
                    self.state = 232
                    localctx.op = self.arithOp()
                    self.state = 233
                    localctx.right = self.valueExpression(2) 
                self.state = 239
                self._errHandler.sync(self)
                _alt = self._interp.adaptivePredict(self._input,27,self._ctx)

        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.unrollRecursionContexts(_parentctx)
        return localctx


    class PrimaryExpressionContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_primaryExpression

     
        def copyFrom(self, ctx:ParserRuleContext):
            super().copyFrom(ctx)



    class StarFunctionCallExpressionContext(PrimaryExpressionContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.PrimaryExpressionContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def qualifiedName(self):
            return self.getTypedRuleContext(SimpleSqlParser.QualifiedNameContext,0)

        def over(self):
            return self.getTypedRuleContext(SimpleSqlParser.OverContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterStarFunctionCallExpression" ):
                listener.enterStarFunctionCallExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitStarFunctionCallExpression" ):
                listener.exitStarFunctionCallExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitStarFunctionCallExpression" ):
                return visitor.visitStarFunctionCallExpression(self)
            else:
                return visitor.visitChildren(self)


    class SimplePrimaryExpressionContext(PrimaryExpressionContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.PrimaryExpressionContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def simpleExpression(self):
            return self.getTypedRuleContext(SimpleSqlParser.SimpleExpressionContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterSimplePrimaryExpression" ):
                listener.enterSimplePrimaryExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitSimplePrimaryExpression" ):
                listener.exitSimplePrimaryExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitSimplePrimaryExpression" ):
                return visitor.visitSimplePrimaryExpression(self)
            else:
                return visitor.visitChildren(self)


    class CaseExpressionContext(PrimaryExpressionContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.PrimaryExpressionContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def CASE(self):
            return self.getToken(SimpleSqlParser.CASE, 0)
        def END(self):
            return self.getToken(SimpleSqlParser.END, 0)
        def caseItem(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.CaseItemContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.CaseItemContext,i)

        def ELSE(self):
            return self.getToken(SimpleSqlParser.ELSE, 0)
        def expression(self):
            return self.getTypedRuleContext(SimpleSqlParser.ExpressionContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterCaseExpression" ):
                listener.enterCaseExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitCaseExpression" ):
                listener.exitCaseExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitCaseExpression" ):
                return visitor.visitCaseExpression(self)
            else:
                return visitor.visitChildren(self)


    class FunctionCallExpressionContext(PrimaryExpressionContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.PrimaryExpressionContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def qualifiedName(self):
            return self.getTypedRuleContext(SimpleSqlParser.QualifiedNameContext,0)

        def expression(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.ExpressionContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.ExpressionContext,i)

        def over(self):
            return self.getTypedRuleContext(SimpleSqlParser.OverContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterFunctionCallExpression" ):
                listener.enterFunctionCallExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitFunctionCallExpression" ):
                listener.exitFunctionCallExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitFunctionCallExpression" ):
                return visitor.visitFunctionCallExpression(self)
            else:
                return visitor.visitChildren(self)


    class ParenExpressionContext(PrimaryExpressionContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.PrimaryExpressionContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def expression(self):
            return self.getTypedRuleContext(SimpleSqlParser.ExpressionContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterParenExpression" ):
                listener.enterParenExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitParenExpression" ):
                listener.exitParenExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitParenExpression" ):
                return visitor.visitParenExpression(self)
            else:
                return visitor.visitChildren(self)


    class SelectExpressionContext(PrimaryExpressionContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.PrimaryExpressionContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def select(self):
            return self.getTypedRuleContext(SimpleSqlParser.SelectContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterSelectExpression" ):
                listener.enterSelectExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitSelectExpression" ):
                listener.exitSelectExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitSelectExpression" ):
                return visitor.visitSelectExpression(self)
            else:
                return visitor.visitChildren(self)



    def primaryExpression(self):

        localctx = SimpleSqlParser.PrimaryExpressionContext(self, self._ctx, self.state)
        self.enterRule(localctx, 24, self.RULE_primaryExpression)
        self._la = 0 # Token type
        try:
            self.state = 284
            self._errHandler.sync(self)
            la_ = self._interp.adaptivePredict(self._input,34,self._ctx)
            if la_ == 1:
                localctx = SimpleSqlParser.FunctionCallExpressionContext(self, localctx)
                self.enterOuterAlt(localctx, 1)
                self.state = 240
                self.qualifiedName()
                self.state = 241
                self.match(SimpleSqlParser.T__2)
                self.state = 250
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                if (((_la) & ~0x3f) == 0 and ((1 << _la) & ((1 << SimpleSqlParser.T__2) | (1 << SimpleSqlParser.T__14) | (1 << SimpleSqlParser.T__15) | (1 << SimpleSqlParser.CASE) | (1 << SimpleSqlParser.FALSE) | (1 << SimpleSqlParser.LEFT) | (1 << SimpleSqlParser.NOT) | (1 << SimpleSqlParser.NULL) | (1 << SimpleSqlParser.RIGHT) | (1 << SimpleSqlParser.TRUE) | (1 << SimpleSqlParser.STRING) | (1 << SimpleSqlParser.INTEGER_VALUE) | (1 << SimpleSqlParser.DECIMAL_VALUE) | (1 << SimpleSqlParser.FLOAT_VALUE) | (1 << SimpleSqlParser.IDENTIFIER) | (1 << SimpleSqlParser.QUOTED_IDENTIFIER))) != 0):
                    self.state = 242
                    self.expression()
                    self.state = 247
                    self._errHandler.sync(self)
                    _la = self._input.LA(1)
                    while _la==SimpleSqlParser.T__1:
                        self.state = 243
                        self.match(SimpleSqlParser.T__1)
                        self.state = 244
                        self.expression()
                        self.state = 249
                        self._errHandler.sync(self)
                        _la = self._input.LA(1)



                self.state = 252
                self.match(SimpleSqlParser.T__3)
                self.state = 254
                self._errHandler.sync(self)
                la_ = self._interp.adaptivePredict(self._input,30,self._ctx)
                if la_ == 1:
                    self.state = 253
                    self.over()


                pass

            elif la_ == 2:
                localctx = SimpleSqlParser.StarFunctionCallExpressionContext(self, localctx)
                self.enterOuterAlt(localctx, 2)
                self.state = 256
                self.qualifiedName()
                self.state = 257
                self.match(SimpleSqlParser.T__2)
                self.state = 258
                self.match(SimpleSqlParser.T__4)
                self.state = 259
                self.match(SimpleSqlParser.T__3)
                self.state = 261
                self._errHandler.sync(self)
                la_ = self._interp.adaptivePredict(self._input,31,self._ctx)
                if la_ == 1:
                    self.state = 260
                    self.over()


                pass

            elif la_ == 3:
                localctx = SimpleSqlParser.CaseExpressionContext(self, localctx)
                self.enterOuterAlt(localctx, 3)
                self.state = 263
                self.match(SimpleSqlParser.CASE)
                self.state = 267
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                while _la==SimpleSqlParser.WHEN:
                    self.state = 264
                    self.caseItem()
                    self.state = 269
                    self._errHandler.sync(self)
                    _la = self._input.LA(1)

                self.state = 272
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                if _la==SimpleSqlParser.ELSE:
                    self.state = 270
                    self.match(SimpleSqlParser.ELSE)
                    self.state = 271
                    self.expression()


                self.state = 274
                self.match(SimpleSqlParser.END)
                pass

            elif la_ == 4:
                localctx = SimpleSqlParser.SelectExpressionContext(self, localctx)
                self.enterOuterAlt(localctx, 4)
                self.state = 275
                self.match(SimpleSqlParser.T__2)
                self.state = 276
                self.select()
                self.state = 277
                self.match(SimpleSqlParser.T__3)
                pass

            elif la_ == 5:
                localctx = SimpleSqlParser.ParenExpressionContext(self, localctx)
                self.enterOuterAlt(localctx, 5)
                self.state = 279
                self.match(SimpleSqlParser.T__2)
                self.state = 280
                self.expression()
                self.state = 281
                self.match(SimpleSqlParser.T__3)
                pass

            elif la_ == 6:
                localctx = SimpleSqlParser.SimplePrimaryExpressionContext(self, localctx)
                self.enterOuterAlt(localctx, 6)
                self.state = 283
                self.simpleExpression()
                pass


        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class SimpleExpressionContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def qualifiedName(self):
            return self.getTypedRuleContext(SimpleSqlParser.QualifiedNameContext,0)


        def number(self):
            return self.getTypedRuleContext(SimpleSqlParser.NumberContext,0)


        def string(self):
            return self.getTypedRuleContext(SimpleSqlParser.StringContext,0)


        def null(self):
            return self.getTypedRuleContext(SimpleSqlParser.NullContext,0)


        def true(self):
            return self.getTypedRuleContext(SimpleSqlParser.TrueContext,0)


        def false(self):
            return self.getTypedRuleContext(SimpleSqlParser.FalseContext,0)


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_simpleExpression

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterSimpleExpression" ):
                listener.enterSimpleExpression(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitSimpleExpression" ):
                listener.exitSimpleExpression(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitSimpleExpression" ):
                return visitor.visitSimpleExpression(self)
            else:
                return visitor.visitChildren(self)




    def simpleExpression(self):

        localctx = SimpleSqlParser.SimpleExpressionContext(self, self._ctx, self.state)
        self.enterRule(localctx, 26, self.RULE_simpleExpression)
        try:
            self.state = 292
            self._errHandler.sync(self)
            token = self._input.LA(1)
            if token in [SimpleSqlParser.LEFT, SimpleSqlParser.RIGHT, SimpleSqlParser.IDENTIFIER, SimpleSqlParser.QUOTED_IDENTIFIER]:
                self.enterOuterAlt(localctx, 1)
                self.state = 286
                self.qualifiedName()
                pass
            elif token in [SimpleSqlParser.INTEGER_VALUE, SimpleSqlParser.DECIMAL_VALUE, SimpleSqlParser.FLOAT_VALUE]:
                self.enterOuterAlt(localctx, 2)
                self.state = 287
                self.number()
                pass
            elif token in [SimpleSqlParser.STRING]:
                self.enterOuterAlt(localctx, 3)
                self.state = 288
                self.string()
                pass
            elif token in [SimpleSqlParser.NULL]:
                self.enterOuterAlt(localctx, 4)
                self.state = 289
                self.null()
                pass
            elif token in [SimpleSqlParser.TRUE]:
                self.enterOuterAlt(localctx, 5)
                self.state = 290
                self.true()
                pass
            elif token in [SimpleSqlParser.FALSE]:
                self.enterOuterAlt(localctx, 6)
                self.state = 291
                self.false()
                pass
            else:
                raise NoViableAltException(self)

        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class CaseItemContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def WHEN(self):
            return self.getToken(SimpleSqlParser.WHEN, 0)

        def expression(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.ExpressionContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.ExpressionContext,i)


        def THEN(self):
            return self.getToken(SimpleSqlParser.THEN, 0)

        def getRuleIndex(self):
            return SimpleSqlParser.RULE_caseItem

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterCaseItem" ):
                listener.enterCaseItem(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitCaseItem" ):
                listener.exitCaseItem(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitCaseItem" ):
                return visitor.visitCaseItem(self)
            else:
                return visitor.visitChildren(self)




    def caseItem(self):

        localctx = SimpleSqlParser.CaseItemContext(self, self._ctx, self.state)
        self.enterRule(localctx, 28, self.RULE_caseItem)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 294
            self.match(SimpleSqlParser.WHEN)
            self.state = 295
            self.expression()
            self.state = 296
            self.match(SimpleSqlParser.THEN)
            self.state = 297
            self.expression()
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class OverContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def OVER(self):
            return self.getToken(SimpleSqlParser.OVER, 0)

        def ORDER(self):
            return self.getToken(SimpleSqlParser.ORDER, 0)

        def BY(self):
            return self.getToken(SimpleSqlParser.BY, 0)

        def sortItem(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.SortItemContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.SortItemContext,i)


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_over

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterOver" ):
                listener.enterOver(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitOver" ):
                listener.exitOver(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitOver" ):
                return visitor.visitOver(self)
            else:
                return visitor.visitChildren(self)




    def over(self):

        localctx = SimpleSqlParser.OverContext(self, self._ctx, self.state)
        self.enterRule(localctx, 30, self.RULE_over)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 299
            self.match(SimpleSqlParser.OVER)
            self.state = 300
            self.match(SimpleSqlParser.T__2)
            self.state = 311
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            if _la==SimpleSqlParser.ORDER:
                self.state = 301
                self.match(SimpleSqlParser.ORDER)
                self.state = 302
                self.match(SimpleSqlParser.BY)
                self.state = 303
                self.sortItem()
                self.state = 308
                self._errHandler.sync(self)
                _la = self._input.LA(1)
                while _la==SimpleSqlParser.T__1:
                    self.state = 304
                    self.match(SimpleSqlParser.T__1)
                    self.state = 305
                    self.sortItem()
                    self.state = 310
                    self._errHandler.sync(self)
                    _la = self._input.LA(1)



            self.state = 313
            self.match(SimpleSqlParser.T__3)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class SortItemContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser
            self.direction = None # Token

        def expression(self):
            return self.getTypedRuleContext(SimpleSqlParser.ExpressionContext,0)


        def ASC(self):
            return self.getToken(SimpleSqlParser.ASC, 0)

        def DESC(self):
            return self.getToken(SimpleSqlParser.DESC, 0)

        def getRuleIndex(self):
            return SimpleSqlParser.RULE_sortItem

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterSortItem" ):
                listener.enterSortItem(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitSortItem" ):
                listener.exitSortItem(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitSortItem" ):
                return visitor.visitSortItem(self)
            else:
                return visitor.visitChildren(self)




    def sortItem(self):

        localctx = SimpleSqlParser.SortItemContext(self, self._ctx, self.state)
        self.enterRule(localctx, 32, self.RULE_sortItem)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 315
            self.expression()
            self.state = 317
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            if _la==SimpleSqlParser.ASC or _la==SimpleSqlParser.DESC:
                self.state = 316
                localctx.direction = self._input.LT(1)
                _la = self._input.LA(1)
                if not(_la==SimpleSqlParser.ASC or _la==SimpleSqlParser.DESC):
                    localctx.direction = self._errHandler.recoverInline(self)
                else:
                    self._errHandler.reportMatch(self)
                    self.consume()


        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class RelationContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_relation

     
        def copyFrom(self, ctx:ParserRuleContext):
            super().copyFrom(ctx)


    class AliasedRelationContext(RelationContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.RelationContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def relation(self):
            return self.getTypedRuleContext(SimpleSqlParser.RelationContext,0)

        def identifier(self):
            return self.getTypedRuleContext(SimpleSqlParser.IdentifierContext,0)

        def AS(self):
            return self.getToken(SimpleSqlParser.AS, 0)

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterAliasedRelation" ):
                listener.enterAliasedRelation(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitAliasedRelation" ):
                listener.exitAliasedRelation(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitAliasedRelation" ):
                return visitor.visitAliasedRelation(self)
            else:
                return visitor.visitChildren(self)


    class JoinRelationContext(RelationContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.RelationContext
            super().__init__(parser)
            self.left = None # RelationContext
            self.ty = None # JoinTypeContext
            self.right = None # RelationContext
            self.cond = None # BooleanExpressionContext
            self.copyFrom(ctx)

        def JOIN(self):
            return self.getToken(SimpleSqlParser.JOIN, 0)
        def relation(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.RelationContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.RelationContext,i)

        def ON(self):
            return self.getToken(SimpleSqlParser.ON, 0)
        def joinType(self):
            return self.getTypedRuleContext(SimpleSqlParser.JoinTypeContext,0)

        def booleanExpression(self):
            return self.getTypedRuleContext(SimpleSqlParser.BooleanExpressionContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterJoinRelation" ):
                listener.enterJoinRelation(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitJoinRelation" ):
                listener.exitJoinRelation(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitJoinRelation" ):
                return visitor.visitJoinRelation(self)
            else:
                return visitor.visitChildren(self)


    class SelectRelationContext(RelationContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.RelationContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def select(self):
            return self.getTypedRuleContext(SimpleSqlParser.SelectContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterSelectRelation" ):
                listener.enterSelectRelation(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitSelectRelation" ):
                listener.exitSelectRelation(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitSelectRelation" ):
                return visitor.visitSelectRelation(self)
            else:
                return visitor.visitChildren(self)


    class TableRelationContext(RelationContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.RelationContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def qualifiedName(self):
            return self.getTypedRuleContext(SimpleSqlParser.QualifiedNameContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterTableRelation" ):
                listener.enterTableRelation(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitTableRelation" ):
                listener.exitTableRelation(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitTableRelation" ):
                return visitor.visitTableRelation(self)
            else:
                return visitor.visitChildren(self)


    class ParenRelationContext(RelationContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.RelationContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def relation(self):
            return self.getTypedRuleContext(SimpleSqlParser.RelationContext,0)


        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterParenRelation" ):
                listener.enterParenRelation(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitParenRelation" ):
                listener.exitParenRelation(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitParenRelation" ):
                return visitor.visitParenRelation(self)
            else:
                return visitor.visitChildren(self)



    def relation(self, _p:int=0):
        _parentctx = self._ctx
        _parentState = self.state
        localctx = SimpleSqlParser.RelationContext(self, self._ctx, _parentState)
        _prevctx = localctx
        _startState = 34
        self.enterRecursionRule(localctx, 34, self.RULE_relation, _p)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 329
            self._errHandler.sync(self)
            la_ = self._interp.adaptivePredict(self._input,39,self._ctx)
            if la_ == 1:
                localctx = SimpleSqlParser.SelectRelationContext(self, localctx)
                self._ctx = localctx
                _prevctx = localctx

                self.state = 320
                self.match(SimpleSqlParser.T__2)
                self.state = 321
                self.select()
                self.state = 322
                self.match(SimpleSqlParser.T__3)
                pass

            elif la_ == 2:
                localctx = SimpleSqlParser.ParenRelationContext(self, localctx)
                self._ctx = localctx
                _prevctx = localctx
                self.state = 324
                self.match(SimpleSqlParser.T__2)
                self.state = 325
                self.relation(0)
                self.state = 326
                self.match(SimpleSqlParser.T__3)
                pass

            elif la_ == 3:
                localctx = SimpleSqlParser.TableRelationContext(self, localctx)
                self._ctx = localctx
                _prevctx = localctx
                self.state = 328
                self.qualifiedName()
                pass


            self._ctx.stop = self._input.LT(-1)
            self.state = 348
            self._errHandler.sync(self)
            _alt = self._interp.adaptivePredict(self._input,44,self._ctx)
            while _alt!=2 and _alt!=ATN.INVALID_ALT_NUMBER:
                if _alt==1:
                    if self._parseListeners is not None:
                        self.triggerExitRuleEvent()
                    _prevctx = localctx
                    self.state = 346
                    self._errHandler.sync(self)
                    la_ = self._interp.adaptivePredict(self._input,43,self._ctx)
                    if la_ == 1:
                        localctx = SimpleSqlParser.AliasedRelationContext(self, SimpleSqlParser.RelationContext(self, _parentctx, _parentState))
                        self.pushNewRecursionContext(localctx, _startState, self.RULE_relation)
                        self.state = 331
                        if not self.precpred(self._ctx, 5):
                            from antlr4.error.Errors import FailedPredicateException
                            raise FailedPredicateException(self, "self.precpred(self._ctx, 5)")
                        self.state = 333
                        self._errHandler.sync(self)
                        _la = self._input.LA(1)
                        if _la==SimpleSqlParser.AS:
                            self.state = 332
                            self.match(SimpleSqlParser.AS)


                        self.state = 335
                        self.identifier()
                        pass

                    elif la_ == 2:
                        localctx = SimpleSqlParser.JoinRelationContext(self, SimpleSqlParser.RelationContext(self, _parentctx, _parentState))
                        localctx.left = _prevctx
                        self.pushNewRecursionContext(localctx, _startState, self.RULE_relation)
                        self.state = 336
                        if not self.precpred(self._ctx, 4):
                            from antlr4.error.Errors import FailedPredicateException
                            raise FailedPredicateException(self, "self.precpred(self._ctx, 4)")
                        self.state = 338
                        self._errHandler.sync(self)
                        _la = self._input.LA(1)
                        if (((_la) & ~0x3f) == 0 and ((1 << _la) & ((1 << SimpleSqlParser.CROSS) | (1 << SimpleSqlParser.FULL) | (1 << SimpleSqlParser.INNER) | (1 << SimpleSqlParser.LEFT) | (1 << SimpleSqlParser.NATURAL) | (1 << SimpleSqlParser.RIGHT))) != 0):
                            self.state = 337
                            localctx.ty = self.joinType()


                        self.state = 340
                        self.match(SimpleSqlParser.JOIN)
                        self.state = 341
                        localctx.right = self.relation(0)
                        self.state = 344
                        self._errHandler.sync(self)
                        la_ = self._interp.adaptivePredict(self._input,42,self._ctx)
                        if la_ == 1:
                            self.state = 342
                            self.match(SimpleSqlParser.ON)
                            self.state = 343
                            localctx.cond = self.booleanExpression(0)


                        pass

             
                self.state = 350
                self._errHandler.sync(self)
                _alt = self._interp.adaptivePredict(self._input,44,self._ctx)

        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.unrollRecursionContexts(_parentctx)
        return localctx


    class GroupByContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def expression(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.ExpressionContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.ExpressionContext,i)


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_groupBy

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterGroupBy" ):
                listener.enterGroupBy(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitGroupBy" ):
                listener.exitGroupBy(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitGroupBy" ):
                return visitor.visitGroupBy(self)
            else:
                return visitor.visitChildren(self)




    def groupBy(self):

        localctx = SimpleSqlParser.GroupByContext(self, self._ctx, self.state)
        self.enterRule(localctx, 36, self.RULE_groupBy)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 351
            self.expression()
            self.state = 356
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            while _la==SimpleSqlParser.T__1:
                self.state = 352
                self.match(SimpleSqlParser.T__1)
                self.state = 353
                self.expression()
                self.state = 358
                self._errHandler.sync(self)
                _la = self._input.LA(1)

        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class QualifiedNameContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def identifier(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.IdentifierContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.IdentifierContext,i)


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_qualifiedName

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterQualifiedName" ):
                listener.enterQualifiedName(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitQualifiedName" ):
                listener.exitQualifiedName(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitQualifiedName" ):
                return visitor.visitQualifiedName(self)
            else:
                return visitor.visitChildren(self)




    def qualifiedName(self):

        localctx = SimpleSqlParser.QualifiedNameContext(self, self._ctx, self.state)
        self.enterRule(localctx, 38, self.RULE_qualifiedName)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 359
            self.identifier()
            self.state = 364
            self._errHandler.sync(self)
            _alt = self._interp.adaptivePredict(self._input,46,self._ctx)
            while _alt!=2 and _alt!=ATN.INVALID_ALT_NUMBER:
                if _alt==1:
                    self.state = 360
                    self.match(SimpleSqlParser.T__6)
                    self.state = 361
                    self.identifier() 
                self.state = 366
                self._errHandler.sync(self)
                _alt = self._interp.adaptivePredict(self._input,46,self._ctx)

        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class IdentifierListContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def identifier(self, i:int=None):
            if i is None:
                return self.getTypedRuleContexts(SimpleSqlParser.IdentifierContext)
            else:
                return self.getTypedRuleContext(SimpleSqlParser.IdentifierContext,i)


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_identifierList

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterIdentifierList" ):
                listener.enterIdentifierList(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitIdentifierList" ):
                listener.exitIdentifierList(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitIdentifierList" ):
                return visitor.visitIdentifierList(self)
            else:
                return visitor.visitChildren(self)




    def identifierList(self):

        localctx = SimpleSqlParser.IdentifierListContext(self, self._ctx, self.state)
        self.enterRule(localctx, 40, self.RULE_identifierList)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 367
            self.identifier()
            self.state = 372
            self._errHandler.sync(self)
            _la = self._input.LA(1)
            while _la==SimpleSqlParser.T__1:
                self.state = 368
                self.match(SimpleSqlParser.T__1)
                self.state = 369
                self.identifier()
                self.state = 374
                self._errHandler.sync(self)
                _la = self._input.LA(1)

        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class IdentifierContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def unquotedIdentifier(self):
            return self.getTypedRuleContext(SimpleSqlParser.UnquotedIdentifierContext,0)


        def quotedIdentifier(self):
            return self.getTypedRuleContext(SimpleSqlParser.QuotedIdentifierContext,0)


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_identifier

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterIdentifier" ):
                listener.enterIdentifier(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitIdentifier" ):
                listener.exitIdentifier(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitIdentifier" ):
                return visitor.visitIdentifier(self)
            else:
                return visitor.visitChildren(self)




    def identifier(self):

        localctx = SimpleSqlParser.IdentifierContext(self, self._ctx, self.state)
        self.enterRule(localctx, 42, self.RULE_identifier)
        try:
            self.state = 377
            self._errHandler.sync(self)
            token = self._input.LA(1)
            if token in [SimpleSqlParser.LEFT, SimpleSqlParser.RIGHT, SimpleSqlParser.IDENTIFIER]:
                self.enterOuterAlt(localctx, 1)
                self.state = 375
                self.unquotedIdentifier()
                pass
            elif token in [SimpleSqlParser.QUOTED_IDENTIFIER]:
                self.enterOuterAlt(localctx, 2)
                self.state = 376
                self.quotedIdentifier()
                pass
            else:
                raise NoViableAltException(self)

        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class QuotedIdentifierContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def QUOTED_IDENTIFIER(self):
            return self.getToken(SimpleSqlParser.QUOTED_IDENTIFIER, 0)

        def getRuleIndex(self):
            return SimpleSqlParser.RULE_quotedIdentifier

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterQuotedIdentifier" ):
                listener.enterQuotedIdentifier(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitQuotedIdentifier" ):
                listener.exitQuotedIdentifier(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitQuotedIdentifier" ):
                return visitor.visitQuotedIdentifier(self)
            else:
                return visitor.visitChildren(self)




    def quotedIdentifier(self):

        localctx = SimpleSqlParser.QuotedIdentifierContext(self, self._ctx, self.state)
        self.enterRule(localctx, 44, self.RULE_quotedIdentifier)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 379
            self.match(SimpleSqlParser.QUOTED_IDENTIFIER)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class NumberContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_number

     
        def copyFrom(self, ctx:ParserRuleContext):
            super().copyFrom(ctx)



    class DecimalNumberContext(NumberContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.NumberContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def DECIMAL_VALUE(self):
            return self.getToken(SimpleSqlParser.DECIMAL_VALUE, 0)

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterDecimalNumber" ):
                listener.enterDecimalNumber(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitDecimalNumber" ):
                listener.exitDecimalNumber(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitDecimalNumber" ):
                return visitor.visitDecimalNumber(self)
            else:
                return visitor.visitChildren(self)


    class IntegerNumberContext(NumberContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.NumberContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def INTEGER_VALUE(self):
            return self.getToken(SimpleSqlParser.INTEGER_VALUE, 0)

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterIntegerNumber" ):
                listener.enterIntegerNumber(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitIntegerNumber" ):
                listener.exitIntegerNumber(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitIntegerNumber" ):
                return visitor.visitIntegerNumber(self)
            else:
                return visitor.visitChildren(self)


    class FloatNumberContext(NumberContext):

        def __init__(self, parser, ctx:ParserRuleContext): # actually a SimpleSqlParser.NumberContext
            super().__init__(parser)
            self.copyFrom(ctx)

        def FLOAT_VALUE(self):
            return self.getToken(SimpleSqlParser.FLOAT_VALUE, 0)

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterFloatNumber" ):
                listener.enterFloatNumber(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitFloatNumber" ):
                listener.exitFloatNumber(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitFloatNumber" ):
                return visitor.visitFloatNumber(self)
            else:
                return visitor.visitChildren(self)



    def number(self):

        localctx = SimpleSqlParser.NumberContext(self, self._ctx, self.state)
        self.enterRule(localctx, 46, self.RULE_number)
        try:
            self.state = 384
            self._errHandler.sync(self)
            token = self._input.LA(1)
            if token in [SimpleSqlParser.INTEGER_VALUE]:
                localctx = SimpleSqlParser.IntegerNumberContext(self, localctx)
                self.enterOuterAlt(localctx, 1)
                self.state = 381
                self.match(SimpleSqlParser.INTEGER_VALUE)
                pass
            elif token in [SimpleSqlParser.DECIMAL_VALUE]:
                localctx = SimpleSqlParser.DecimalNumberContext(self, localctx)
                self.enterOuterAlt(localctx, 2)
                self.state = 382
                self.match(SimpleSqlParser.DECIMAL_VALUE)
                pass
            elif token in [SimpleSqlParser.FLOAT_VALUE]:
                localctx = SimpleSqlParser.FloatNumberContext(self, localctx)
                self.enterOuterAlt(localctx, 3)
                self.state = 383
                self.match(SimpleSqlParser.FLOAT_VALUE)
                pass
            else:
                raise NoViableAltException(self)

        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class StringContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def STRING(self):
            return self.getToken(SimpleSqlParser.STRING, 0)

        def getRuleIndex(self):
            return SimpleSqlParser.RULE_string

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterString" ):
                listener.enterString(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitString" ):
                listener.exitString(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitString" ):
                return visitor.visitString(self)
            else:
                return visitor.visitChildren(self)




    def string(self):

        localctx = SimpleSqlParser.StringContext(self, self._ctx, self.state)
        self.enterRule(localctx, 48, self.RULE_string)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 386
            self.match(SimpleSqlParser.STRING)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class NullContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def NULL(self):
            return self.getToken(SimpleSqlParser.NULL, 0)

        def getRuleIndex(self):
            return SimpleSqlParser.RULE_null

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterNull" ):
                listener.enterNull(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitNull" ):
                listener.exitNull(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitNull" ):
                return visitor.visitNull(self)
            else:
                return visitor.visitChildren(self)




    def null(self):

        localctx = SimpleSqlParser.NullContext(self, self._ctx, self.state)
        self.enterRule(localctx, 50, self.RULE_null)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 388
            self.match(SimpleSqlParser.NULL)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class TrueContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def TRUE(self):
            return self.getToken(SimpleSqlParser.TRUE, 0)

        def getRuleIndex(self):
            return SimpleSqlParser.RULE_true

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterTrue" ):
                listener.enterTrue(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitTrue" ):
                listener.exitTrue(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitTrue" ):
                return visitor.visitTrue(self)
            else:
                return visitor.visitChildren(self)




    def true(self):

        localctx = SimpleSqlParser.TrueContext(self, self._ctx, self.state)
        self.enterRule(localctx, 52, self.RULE_true)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 390
            self.match(SimpleSqlParser.TRUE)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class FalseContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def FALSE(self):
            return self.getToken(SimpleSqlParser.FALSE, 0)

        def getRuleIndex(self):
            return SimpleSqlParser.RULE_false

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterFalse" ):
                listener.enterFalse(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitFalse" ):
                listener.exitFalse(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitFalse" ):
                return visitor.visitFalse(self)
            else:
                return visitor.visitChildren(self)




    def false(self):

        localctx = SimpleSqlParser.FalseContext(self, self._ctx, self.state)
        self.enterRule(localctx, 54, self.RULE_false)
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 392
            self.match(SimpleSqlParser.FALSE)
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class SetQuantifierContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def DISTINCT(self):
            return self.getToken(SimpleSqlParser.DISTINCT, 0)

        def ALL(self):
            return self.getToken(SimpleSqlParser.ALL, 0)

        def getRuleIndex(self):
            return SimpleSqlParser.RULE_setQuantifier

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterSetQuantifier" ):
                listener.enterSetQuantifier(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitSetQuantifier" ):
                listener.exitSetQuantifier(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitSetQuantifier" ):
                return visitor.visitSetQuantifier(self)
            else:
                return visitor.visitChildren(self)




    def setQuantifier(self):

        localctx = SimpleSqlParser.SetQuantifierContext(self, self._ctx, self.state)
        self.enterRule(localctx, 56, self.RULE_setQuantifier)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 394
            _la = self._input.LA(1)
            if not(_la==SimpleSqlParser.ALL or _la==SimpleSqlParser.DISTINCT):
                self._errHandler.recoverInline(self)
            else:
                self._errHandler.reportMatch(self)
                self.consume()
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class JoinTypeContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def INNER(self):
            return self.getToken(SimpleSqlParser.INNER, 0)

        def LEFT(self):
            return self.getToken(SimpleSqlParser.LEFT, 0)

        def OUTER(self):
            return self.getToken(SimpleSqlParser.OUTER, 0)

        def RIGHT(self):
            return self.getToken(SimpleSqlParser.RIGHT, 0)

        def FULL(self):
            return self.getToken(SimpleSqlParser.FULL, 0)

        def CROSS(self):
            return self.getToken(SimpleSqlParser.CROSS, 0)

        def NATURAL(self):
            return self.getToken(SimpleSqlParser.NATURAL, 0)

        def getRuleIndex(self):
            return SimpleSqlParser.RULE_joinType

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterJoinType" ):
                listener.enterJoinType(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitJoinType" ):
                listener.exitJoinType(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitJoinType" ):
                return visitor.visitJoinType(self)
            else:
                return visitor.visitChildren(self)




    def joinType(self):

        localctx = SimpleSqlParser.JoinTypeContext(self, self._ctx, self.state)
        self.enterRule(localctx, 58, self.RULE_joinType)
        try:
            self.state = 408
            self._errHandler.sync(self)
            la_ = self._interp.adaptivePredict(self._input,50,self._ctx)
            if la_ == 1:
                self.enterOuterAlt(localctx, 1)
                self.state = 396
                self.match(SimpleSqlParser.INNER)
                pass

            elif la_ == 2:
                self.enterOuterAlt(localctx, 2)
                self.state = 397
                self.match(SimpleSqlParser.LEFT)
                pass

            elif la_ == 3:
                self.enterOuterAlt(localctx, 3)
                self.state = 398
                self.match(SimpleSqlParser.LEFT)
                self.state = 399
                self.match(SimpleSqlParser.OUTER)
                pass

            elif la_ == 4:
                self.enterOuterAlt(localctx, 4)
                self.state = 400
                self.match(SimpleSqlParser.RIGHT)
                pass

            elif la_ == 5:
                self.enterOuterAlt(localctx, 5)
                self.state = 401
                self.match(SimpleSqlParser.RIGHT)
                self.state = 402
                self.match(SimpleSqlParser.OUTER)
                pass

            elif la_ == 6:
                self.enterOuterAlt(localctx, 6)
                self.state = 403
                self.match(SimpleSqlParser.FULL)
                pass

            elif la_ == 7:
                self.enterOuterAlt(localctx, 7)
                self.state = 404
                self.match(SimpleSqlParser.FULL)
                self.state = 405
                self.match(SimpleSqlParser.OUTER)
                pass

            elif la_ == 8:
                self.enterOuterAlt(localctx, 8)
                self.state = 406
                self.match(SimpleSqlParser.CROSS)
                pass

            elif la_ == 9:
                self.enterOuterAlt(localctx, 9)
                self.state = 407
                self.match(SimpleSqlParser.NATURAL)
                pass


        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class CmpOpContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_cmpOp

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterCmpOp" ):
                listener.enterCmpOp(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitCmpOp" ):
                listener.exitCmpOp(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitCmpOp" ):
                return visitor.visitCmpOp(self)
            else:
                return visitor.visitChildren(self)




    def cmpOp(self):

        localctx = SimpleSqlParser.CmpOpContext(self, self._ctx, self.state)
        self.enterRule(localctx, 60, self.RULE_cmpOp)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 410
            _la = self._input.LA(1)
            if not((((_la) & ~0x3f) == 0 and ((1 << _la) & ((1 << SimpleSqlParser.T__7) | (1 << SimpleSqlParser.T__8) | (1 << SimpleSqlParser.T__9) | (1 << SimpleSqlParser.T__10) | (1 << SimpleSqlParser.T__11) | (1 << SimpleSqlParser.T__12) | (1 << SimpleSqlParser.T__13))) != 0)):
                self._errHandler.recoverInline(self)
            else:
                self._errHandler.reportMatch(self)
                self.consume()
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class ArithOpContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_arithOp

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterArithOp" ):
                listener.enterArithOp(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitArithOp" ):
                listener.exitArithOp(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitArithOp" ):
                return visitor.visitArithOp(self)
            else:
                return visitor.visitChildren(self)




    def arithOp(self):

        localctx = SimpleSqlParser.ArithOpContext(self, self._ctx, self.state)
        self.enterRule(localctx, 62, self.RULE_arithOp)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 412
            _la = self._input.LA(1)
            if not((((_la) & ~0x3f) == 0 and ((1 << _la) & ((1 << SimpleSqlParser.T__4) | (1 << SimpleSqlParser.T__14) | (1 << SimpleSqlParser.T__15) | (1 << SimpleSqlParser.T__16) | (1 << SimpleSqlParser.T__17) | (1 << SimpleSqlParser.T__18))) != 0)):
                self._errHandler.recoverInline(self)
            else:
                self._errHandler.reportMatch(self)
                self.consume()
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class UnaryOpContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser


        def getRuleIndex(self):
            return SimpleSqlParser.RULE_unaryOp

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterUnaryOp" ):
                listener.enterUnaryOp(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitUnaryOp" ):
                listener.exitUnaryOp(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitUnaryOp" ):
                return visitor.visitUnaryOp(self)
            else:
                return visitor.visitChildren(self)




    def unaryOp(self):

        localctx = SimpleSqlParser.UnaryOpContext(self, self._ctx, self.state)
        self.enterRule(localctx, 64, self.RULE_unaryOp)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 414
            _la = self._input.LA(1)
            if not(_la==SimpleSqlParser.T__14 or _la==SimpleSqlParser.T__15):
                self._errHandler.recoverInline(self)
            else:
                self._errHandler.reportMatch(self)
                self.consume()
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx


    class UnquotedIdentifierContext(ParserRuleContext):

        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
            super().__init__(parent, invokingState)
            self.parser = parser

        def IDENTIFIER(self):
            return self.getToken(SimpleSqlParser.IDENTIFIER, 0)

        def LEFT(self):
            return self.getToken(SimpleSqlParser.LEFT, 0)

        def RIGHT(self):
            return self.getToken(SimpleSqlParser.RIGHT, 0)

        def getRuleIndex(self):
            return SimpleSqlParser.RULE_unquotedIdentifier

        def enterRule(self, listener:ParseTreeListener):
            if hasattr( listener, "enterUnquotedIdentifier" ):
                listener.enterUnquotedIdentifier(self)

        def exitRule(self, listener:ParseTreeListener):
            if hasattr( listener, "exitUnquotedIdentifier" ):
                listener.exitUnquotedIdentifier(self)

        def accept(self, visitor:ParseTreeVisitor):
            if hasattr( visitor, "visitUnquotedIdentifier" ):
                return visitor.visitUnquotedIdentifier(self)
            else:
                return visitor.visitChildren(self)




    def unquotedIdentifier(self):

        localctx = SimpleSqlParser.UnquotedIdentifierContext(self, self._ctx, self.state)
        self.enterRule(localctx, 66, self.RULE_unquotedIdentifier)
        self._la = 0 # Token type
        try:
            self.enterOuterAlt(localctx, 1)
            self.state = 416
            _la = self._input.LA(1)
            if not((((_la) & ~0x3f) == 0 and ((1 << _la) & ((1 << SimpleSqlParser.LEFT) | (1 << SimpleSqlParser.RIGHT) | (1 << SimpleSqlParser.IDENTIFIER))) != 0)):
                self._errHandler.recoverInline(self)
            else:
                self._errHandler.reportMatch(self)
                self.consume()
        except RecognitionException as re:
            localctx.exception = re
            self._errHandler.reportError(self, re)
            self._errHandler.recover(self, re)
        finally:
            self.exitRule()
        return localctx



    def sempred(self, localctx:RuleContext, ruleIndex:int, predIndex:int):
        if self._predicates == None:
            self._predicates = dict()
        self._predicates[9] = self.booleanExpression_sempred
        self._predicates[11] = self.valueExpression_sempred
        self._predicates[17] = self.relation_sempred
        pred = self._predicates.get(ruleIndex, None)
        if pred is None:
            raise Exception("No predicate with index:" + str(ruleIndex))
        else:
            return pred(localctx, predIndex)

    def booleanExpression_sempred(self, localctx:BooleanExpressionContext, predIndex:int):
            if predIndex == 0:
                return self.precpred(self._ctx, 2)
         

            if predIndex == 1:
                return self.precpred(self._ctx, 1)
         

    def valueExpression_sempred(self, localctx:ValueExpressionContext, predIndex:int):
            if predIndex == 2:
                return self.precpred(self._ctx, 1)
         

    def relation_sempred(self, localctx:RelationContext, predIndex:int):
            if predIndex == 3:
                return self.precpred(self._ctx, 5)
         

            if predIndex == 4:
                return self.precpred(self._ctx, 4)
