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feat(flink): add queryStatement

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This commit is contained in:
Erindcl 2020-11-05 20:00:20 +08:00
parent 9fc91a572a
commit ba29949359
1 changed files with 67 additions and 9 deletions
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76
src/grammar/flinksql/FlinkSqlParser.g4
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@ -129,20 +129,25 @@ dropFunction
// Select statements
queryStatement
: valuesDefinition
| (
selectStatement
| selectWithoutFromDefinition
// | queryStatement UNION ALL? queryStatement
// | queryStatement EXCEPT queryStatement
// | queryStatement INTERSECT queryStatement
) queryOrderByDefinition? queryLimitDefinition? queryOffsetDefinition? queryFetchDefinition?
: valuesDefinition | selectStatements queryOrderByDefinition? queryLimitDefinition? queryOffsetDefinition? queryFetchDefinition?
;
selectStatements
: selectStatement
| selectWithoutFromDefinition
// | queryStatement UNION ALL? queryStatement
// | queryStatement EXCEPT queryStatement
// | queryStatement INTERSECT queryStatement
;
selectStatement
: SELECT (ALL | DISTINCT)?
(ASTERISK_SIGN | projectItemDefinition (COMMA projectItemDefinition)*)
FROM tableExpression
(WHERE booleanExpression)?
(GROUP BY groupItemDefinition (COMMA groupItemDefinition)*)
(HAVING booleanExpression)?
// (WINDOW windowName AS windowSpec (COMMA windowName AS windowSpec)*)?
;
projectItemDefinition // expression (AS? columnAlias)? | tableAlias . *
@ -150,11 +155,60 @@ projectItemDefinition // expression (AS? columnAlias)? | tableAlias . *
;
tableExpression
: tableReference (COMMA tableReference)*
| tableExpression NATURAL? (LEFT | RIGHT | FULL)? JOIN tableExpression joinCondition?
;
tableReference
: // tablePrimary matchRecognize? (AS? alias (LR_BRACKET columnAlias (COMMA columnAlias)* RR_BRACKET)?)?
;
// tablePrimary
// : TABLE? uid dynamicTableOptions?
// | LATERAL TABLE LR_BRACKET uid LR_BRACKET expression (COMMA expression)* RR_BRACKET RR_BRACKET
// | UNNEST LR_BRACKET expression RR_BRACKET
// ;
joinCondition // ON booleanExpression | USING LR_BRACKET column (COMMA column)* RR_BRACKET
:
;
booleanExpression
:
;
groupItemDefinition
: expression
| LR_BRACKET RR_BRACKET
| LR_BRACKET expression (COMMA expression)* RR_BRACKET
| CUBE LR_BRACKET expression (COMMA expression)* RR_BRACKET
| ROLLUP LR_BRACKET expression (COMMA expression)* RR_BRACKET
| GROUPING SETS LR_BRACKET groupItemDefinition (COMMA groupItemDefinition)* RR_BRACKET
;
// windowRef
// : windowName | windowSpec
// ;
// windowSpec
// : windowName
// LR_BRACKET
// (ORDER BY orderItem (COMMA orderItem)*)?
// (PARTITION BY expression (COMMA expression)*)
// (
// RANGE numericOrIntervalExpression PRECEDING
// | ROWS numericExpression PRECEDING
// )?
// RR_BRACKET
// ;
selectWithoutFromDefinition
:
: SELECT (ALL | DISTINCT)? (ASTERISK_SIGN | projectItem (COMMA projectItem)*)
;
projectItem
: // expression (AS? columnAlias)? | tableAlias . *
;
queryOrderByDefinition
@ -233,4 +287,8 @@ ifExists
keyValueDefinition
: DOUBLE_QUOTE_ID EQUAL_SYMBOL DOUBLE_QUOTE_ID
;
expression
:
;