feat(fink): refactoring selectStatement
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Erindcl
parent
a5ea7be606
commit
d7d32a3824
@ -320,6 +320,8 @@ BIT_XOR_OP: '^';
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// Constructors symbols
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DOT: '.';
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LS_BRACKET: '[';
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RS_BRACKET: ']';
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LR_BRACKET: '(';
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RR_BRACKET: ')';
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COMMA: ',';
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@ -333,6 +335,7 @@ DOUBLE_QUOTE_SYMB: '"';
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REVERSE_QUOTE_SYMB: '`';
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COLON_SYMB: ':';
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ASTERISK_SIGN: '*';
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UNDERLINE_SIGN: '_';
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STRING_LITERAL: DQUOTA_STRING | SQUOTA_STRING | BQUOTA_STRING;
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DECIMAL_LITERAL: DEC_DIGIT+;
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REAL_LITERAL: (DEC_DIGIT+)? '.' DEC_DIGIT+
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@ -340,10 +343,12 @@ REAL_LITERAL: (DEC_DIGIT+)? '.' DEC_DIGIT+
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| (DEC_DIGIT+)? '.' (DEC_DIGIT+ EXPONENT_NUM_PART)
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| DEC_DIGIT+ EXPONENT_NUM_PART;
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BIT_STRING: BIT_STRING_L;
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IDENTIFIER_BASE: (DEC_LETTER | DEC_DIGIT | UNDERLINE_SIGN)+;
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fragment EXPONENT_NUM_PART: 'E' [-+]? DEC_DIGIT+;
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fragment ID_LITERAL: [A-Z_0-9a-z]*?[A-Z_a-z]+?[A-Z_0-9a-z]*;
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fragment DEC_DIGIT: [0-9];
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fragment DEC_LETTER: [A-Za-z];
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fragment DQUOTA_STRING: '"' ( '\\'. | '""' | ~('"'| '\\') )* '"';
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fragment SQUOTA_STRING: '\'' ('\\'. | '\'\'' | ~('\'' | '\\'))* '\'';
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fragment BIT_STRING_L: 'B' '\'' [01]+ '\'';
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@ -126,122 +126,6 @@ dropFunction
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;
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// Select statements
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queryStatement
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: valuesDefinition | selectStatements queryOrderByDefinition? queryLimitDefinition? queryOffsetDefinition? queryFetchDefinition?
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;
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selectStatements
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: selectStatement
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| selectWithoutFromDefinition
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// | queryStatement UNION ALL? queryStatement
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// | queryStatement EXCEPT queryStatement
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// | queryStatement INTERSECT queryStatement
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;
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selectStatement
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: SELECT (ALL | DISTINCT)?
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(ASTERISK_SIGN | projectItemDefinition (COMMA projectItemDefinition)*)
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FROM tableExpression
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(WHERE expression)?
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(GROUP BY groupItemDefinition (COMMA groupItemDefinition)*)
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(HAVING expression)?
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// (WINDOW windowName AS windowSpec (COMMA windowName AS windowSpec)*)?
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;
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projectItemDefinition
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: expression (AS? uid)? | uid '.' '*'
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;
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tableExpression
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: tableReference (COMMA tableReference)*
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| tableExpression NATURAL? (LEFT | RIGHT | FULL)? JOIN tableExpression joinCondition?
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;
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tableReference
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: tablePrimary matchRecognize? (AS? uid (LR_BRACKET uid (COMMA uid)* RR_BRACKET)?)?
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;
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matchRecognize
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:
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;
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tablePrimary
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: TABLE? uid dynamicTableOptions?
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| LATERAL TABLE LR_BRACKET uid LR_BRACKET expression (COMMA expression)* RR_BRACKET RR_BRACKET
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| UNNEST LR_BRACKET expression RR_BRACKET
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;
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dynamicTableOptions
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:
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;
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joinCondition
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: ON booleanExpression | USING LR_BRACKET uid (COMMA uid)* RR_BRACKET
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;
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booleanExpression
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:
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;
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groupItemDefinition
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: expression
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| LR_BRACKET RR_BRACKET
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| LR_BRACKET expression (COMMA expression)* RR_BRACKET
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| CUBE LR_BRACKET expression (COMMA expression)* RR_BRACKET
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| ROLLUP LR_BRACKET expression (COMMA expression)* RR_BRACKET
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| GROUPING SETS LR_BRACKET groupItemDefinition (COMMA groupItemDefinition)* RR_BRACKET
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;
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// windowRef
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// : windowName | windowSpec
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// ;
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// windowSpec
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// : windowName
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// LR_BRACKET
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// (ORDER BY orderItem (COMMA orderItem)*)?
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// (PARTITION BY expression (COMMA expression)*)
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// (
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// RANGE numericOrIntervalExpression PRECEDING
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// | ROWS numericExpression PRECEDING
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// )?
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// RR_BRACKET
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// ;
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selectWithoutFromDefinition
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: SELECT (ALL | DISTINCT)? (ASTERISK_SIGN | projectItem (COMMA projectItem)*)
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;
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projectItem
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: expression (AS? uid)? | uid '.' '*'
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;
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queryOrderByDefinition
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: ORDER BY orderItemDefition (COMMA orderItemDefition)*
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;
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orderItemDefition
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: expression (ASC | DESC)
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;
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queryLimitDefinition
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: LIMIT (countDefinition | ALL)
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;
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countDefinition
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:
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;
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queryOffsetDefinition // OFFSET start (ROW | ROWS)
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:
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;
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queryFetchDefinition // FETCH (FIRST | NEXT) countDefinition? (ROW | ROWS) ONLY
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:
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;
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// Insert statements
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insertStatement
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@ -272,8 +156,134 @@ allValueDifinition
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: stringLiteral | booleanLiteral | DEC_DIGIT | NULL
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;
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// Select statements
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queryStatement
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:
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;
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selectStatement
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: SELECT setQuantifier?
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(ASTERISK_SIGN | projectItemDefinition (COMMA projectItemDefinition)*)
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FROM tableExpression
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;
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projectItemDefinition
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: expression (AS? uid)? | uid '.' '*'
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;
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tableExpression
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: tableReference (COMMA tableReference)*
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;
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tableReference
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: tablePrimary tableAlias
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;
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tablePrimary
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: TABLE? uid
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;
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// expression
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expression
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: booleanExpression
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;
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booleanExpression
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: NOT booleanExpression #logicalNot
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// | EXISTS '(' query ')' #exists
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| valueExpression predicate? #predicated
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| left=booleanExpression operator=AND right=booleanExpression #logicalBinary
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| left=booleanExpression operator=OR right=booleanExpression #logicalBinary
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;
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predicate
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: NOT? kind=BETWEEN lower=valueExpression AND upper=valueExpression
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| NOT? kind=IN '(' expression (',' expression)* ')'
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// | NOT? kind=IN '(' query ')'
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| NOT? kind=RLIKE pattern=valueExpression
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| NOT? kind=LIKE quantifier=(ANY | ALL) ('('')' | '(' expression (',' expression)* ')')
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| NOT? kind=LIKE pattern=valueExpression
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| IS NOT? kind=NULL
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| IS NOT? kind=(TRUE | FALSE)
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| IS NOT? kind=DISTINCT FROM right=valueExpression
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;
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valueExpression
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: primaryExpression #valueExpressionDefault
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| operator=(MINUS | PLUS | TILDE) valueExpression #arithmeticUnary
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| left=valueExpression operator=(ASTERISK | SLASH | PERCENT | DIV) right=valueExpression #arithmeticBinary
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| left=valueExpression operator=(PLUS | MINUS | CONCAT_PIPE) right=valueExpression #arithmeticBinary
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| left=valueExpression operator=AMPERSAND right=valueExpression #arithmeticBinary
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| left=valueExpression operator=HAT right=valueExpression #arithmeticBinary
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| left=valueExpression operator=PIPE right=valueExpression #arithmeticBinary
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| left=valueExpression comparisonOperator right=valueExpression #comparison
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;
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primaryExpression
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: CASE whenClause+ (ELSE elseExpression=expression)? END #searchedCase
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| CASE value=expression whenClause+ (ELSE elseExpression=expression)? END #simpleCase
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// | CAST '(' expression AS dataType ')' #cast
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// | STRUCT '(' (argument+=namedExpression (',' argument+=namedExpression)*)? ')' #struct
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| FIRST '(' expression (IGNORE NULLS)? ')' #first
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| LAST '(' expression (IGNORE NULLS)? ')' #last
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| POSITION '(' substr=valueExpression IN str=valueExpression ')' #position
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| constant #constantDefault
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| ASTERISK #star
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// | qualifiedName '.' ASTERISK #star
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// | '(' namedExpression (',' namedExpression)+ ')' #rowConstructor
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// | '(' query ')' #subqueryExpression
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// | functionName '(' (setQuantifier? argument+=expression (',' argument+=expression)*)? ')'
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// (FILTER '(' WHERE where=booleanExpression ')')? (OVER windowSpec)? #functionCall
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// | identifier '->' expression #lambda
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// | '(' identifier (',' identifier)+ ')' '->' expression #lambda
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| value=primaryExpression LS_BRACKET index=valueExpression RS_BRACKET #subscript
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// | identifier #columnReference
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// | base=primaryExpression '.' fieldName=identifier #dereference
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| '(' expression ')' #parenthesizedExpression
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// | EXTRACT '(' field=identifier FROM source=valueExpression ')' #extract
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// | (SUBSTR | SUBSTRING) '(' str=valueExpression (FROM | ',') pos=valueExpression
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// ((FOR | ',') len=valueExpression)? ')' #substring
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// | TRIM '(' trimOption=(BOTH | LEADING | TRAILING)? (trimStr=valueExpression)?
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// FROM srcStr=valueExpression ')' #trim
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// | OVERLAY '(' input=valueExpression PLACING replace=valueExpression
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// FROM position=valueExpression (FOR length=valueExpression)? ')' #overlay
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;
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// base common
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tableAlias
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: (AS? strictIdentifier identifierList?)?
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;
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identifierList
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: '(' identifierSeq ')'
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;
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identifierSeq
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: identifier (COMMA identifier)*
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;
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identifier
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: strictIdentifier
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;
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strictIdentifier
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: IDENTIFIER_BASE #unquotedIdentifier
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| quotedIdentifier #quotedIdentifierAlternative
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;
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quotedIdentifier
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: STRING_LITERAL
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;
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whenClause
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: WHEN condition=expression THEN result=expression
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;
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uidList
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: uid (',' uid)*
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;
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@ -298,43 +308,6 @@ keyValueDefinition
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: DOUBLE_QUOTE_ID EQUAL_SYMBOL DOUBLE_QUOTE_ID
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;
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expressions
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: expression (',' expression)*
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;
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// Expressions, predicates
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// Simplified approach for expression
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expression
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: notOperator=(NOT | '!') expression #notExpression
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| expression logicalOperator expression #logicalExpression
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| predicate IS NOT? testValue=(TRUE | FALSE) #isExpression
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| predicate #predicateExpression
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;
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predicate
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: predicate NOT? IN '(' (selectStatement | expressions) ')' #inPredicate
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| left=predicate comparisonOperator right=predicate #binaryComparasionPredicate
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| predicate comparisonOperator
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quantifier=(ALL | ANY) '(' selectStatement ')' #subqueryComparasionPredicate
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| predicate NOT? BETWEEN predicate AND predicate #betweenPredicate
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| predicate NOT? LIKE predicate #likePredicate
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| expressionAtom #expressionAtomPredicate
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;
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expressionAtom
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: constant #constantExpressionAtom
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| fullColumnName #fullColumnNameExpressionAtom
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| unaryOperator expressionAtom #unaryExpressionAtom
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| BINARY expressionAtom #binaryExpressionAtom
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| '(' expression (',' expression)* ')' #nestedExpressionAtom
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| ROW '(' expression (',' expression)+ ')' #nestedRowExpressionAtom
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| EXISTS '(' selectStatement ')' #existsExpessionAtom
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| '(' selectStatement ')' #subqueryExpessionAtom
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| left=expressionAtom bitOperator right=expressionAtom #bitExpressionAtom
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| left=expressionAtom mathOperator right=expressionAtom #mathExpressionAtom
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;
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logicalOperator
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: AND | '&' '&' | OR | '|' '|'
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;
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@ -360,11 +333,13 @@ fullColumnName
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;
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constant
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: stringLiteral | decimalLiteral
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| '-' decimalLiteral
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| booleanLiteral
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| REAL_LITERAL | BIT_STRING
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| NOT? NULL
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: stringLiteral // 引号包含的字符串
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| decimalLiteral // 整数
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| '-' decimalLiteral // 负整数
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| booleanLiteral // 布尔值
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| REAL_LITERAL // 小数
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| BIT_STRING
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| NOT? NULL // 空 | 非空
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;
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stringLiteral
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@ -377,3 +352,8 @@ decimalLiteral
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booleanLiteral
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: TRUE | FALSE;
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setQuantifier
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: DISTINCT
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| ALL
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;
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