mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-22 23:52:03 +00:00
alexey-milovidov
GitHub
commit
32abb7ca1f
232
utils/grammar/ClickHouseLexer.g4
Normal file
232
utils/grammar/ClickHouseLexer.g4
Normal file
@ -0,0 +1,232 @@
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lexer grammar ClickHouseLexer;
|
||||
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LINE_COMMENT
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: '--' ~[\r\n]* -> channel(HIDDEN)
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;
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|
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// TOKENS, KEYWORDS
|
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|
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K_ADD : A D D;
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K_AFTER : A F T E R;
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K_ALL : A L L;
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K_ALIAS : A L I A S;
|
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K_ALTER : A L T E R;
|
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K_AND : A N D;
|
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K_ANY : A N Y;
|
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K_ARRAY : A R R A Y;
|
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K_AS : A S;
|
||||
K_ASCENDING : A S C E N D I N G;
|
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K_ASC : A S C;
|
||||
K_ASYNC : A S Y N C;
|
||||
K_ATTACH : A T T A C H;
|
||||
K_BETWEEN : B E T W E E N;
|
||||
K_BY : B Y;
|
||||
K_CASE : C A S E;
|
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K_CAST : C A S T;
|
||||
K_CHECK : C H E C K;
|
||||
K_CLUSTER : C L U S T E R;
|
||||
K_COLUMN : C O L U M N;
|
||||
K_COLLATE : C O L L A T E;
|
||||
K_CREATE : C R E A T E;
|
||||
K_CROSS : C R O S S;
|
||||
K_DAY : D A Y;
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K_DESCRIBE : D E S C R I B E;
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||||
K_DESCENDING : D E S C E N D I N G;
|
||||
K_DESC : D E S C;
|
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K_DATABASE : D A T A B A S E;
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K_DATABASES : D A T A B A S E S;
|
||||
K_DEFAULT : D E F A U L T;
|
||||
K_DETACH : D E T A C H;
|
||||
K_DISTINCT : D I S T I N C T;
|
||||
K_DROP : D R O P;
|
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K_ELSE : E L S E;
|
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K_END : E N D;
|
||||
K_ENGINE : E N G I N E;
|
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K_EXISTS : E X I S T S;
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K_FETCH : F E T C H;
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||||
K_FINAL : F I N A L;
|
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K_FIRST : F I R S T;
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K_FROM : F R O M;
|
||||
K_FREEZE : F R E E Z E;
|
||||
K_FORMAT : F O R M A T;
|
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K_FULL : F U L L;
|
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K_GLOBAL : G L O B A L;
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||||
K_GROUP : G R O U P;
|
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K_HAVING : H A V I N G;
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K_HOUR : H O U R;
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K_ID : I D;
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K_IF : I F;
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K_INNER : I N N E R;
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K_INSERT : I N S E R T;
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K_INTERVAL : I N T E R V A L;
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K_INTO : I N T O;
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K_IN : I N;
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K_IS : I S;
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K_JOIN : J O I N;
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K_KILL: K I L L;
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K_LAST : L A S T;
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K_LEFT : L E F T;
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K_LIKE : L I K E;
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K_LIMIT : L I M I T;
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K_MAIN : M A I N; // not a clickhouse reverved word
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K_MATERIALIZED : M A T E R I A L I Z E D;
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K_MINUTE : M I N U T E;
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K_MODIFY : M O D I F Y;
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K_MONTH : M O N T H;
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K_NOT : N O T;
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K_NULL : N U L L;
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K_NULLS : N U L L S;
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K_OFFSET : O F F S E T;
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K_ON : O N;
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K_OPTIMIZE : O P T I M I Z E;
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K_ORDER : O R D E R;
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K_OR : O R;
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K_OUTFILE : O U T F I L E;
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K_PARTITION : P A R T I T I O N;
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K_POPULATE : P O P U L A T E;
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K_PREWHERE : P R E W H E R E;
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K_PROCESSLIST : P R O C E S S L I S T;
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K_QUERY : Q U E R Y;
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K_RENAME : R E N A M E;
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K_RETURN : R E T U R N; // not a clickhouse reverved word
|
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K_RIGHT : R I G H T;
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K_SAMPLE : S A M P L E;
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K_SECOND : S E C O N D;
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K_SELECT : S E L E C T;
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K_SET : S E T;
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K_SETTINGS : S E T T I N G S;
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K_SHOW : S H O W;
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K_SYNC : S Y N C;
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K_TABLE : T A B L E;
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K_TABLES : T A B L E S;
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K_TEMPORARY : T E M P O R A R Y;
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K_TEST : T E S T;
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K_THEN : T H E N;
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K_TOTALS : T O T A L S;
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K_TO : T O;
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K_OUTER: O U T E R;
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K_VALUES : V A L U E S;
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K_VIEW : V I E W;
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K_UNION : U N I O N;
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K_USE : U S E;
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K_USING : U S I N G;
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K_WEEK : W E E K;
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K_WHEN : W H E N;
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K_WHERE : W H E R E;
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K_WITH : W I T H;
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K_YEAR : Y E A R;
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|
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COLON : ':' ;
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COMMA : ',' ;
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SEMI : ';' ;
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LPAREN : '(' ;
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RPAREN : ')' ;
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RARROW : '->' ;
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LT : '<' ;
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GT : '>' ;
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QUESTION : '?' ;
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STAR : '*' ;
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PLUS : '+' ;
|
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CONCAT : '||' ;
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OR : '|' ;
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DOLLAR : '$' ;
|
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DOT : '.' ;
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PERCENT : '%' ;
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MINUS : '-' ;
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DIVIDE : '/' ;
|
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EQUALS : '==' ;
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ASSIGN : '=' ;
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NOT_EQUALS : '!=' ;
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NOT_EQUALS2 : '<>' ;
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LE : '<=' ;
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GE : '>=' ;
|
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LBRAKET : '[' ;
|
||||
RBRAKET : ']' ;
|
||||
LCURLY : '{' ;
|
||||
RCURLY : '}' ;
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||||
|
||||
|
||||
T_ARRAY : 'Array' ;
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T_TUPLE : 'Tuple' ;
|
||||
T_NULLABLE : 'Nullable' ;
|
||||
T_FLOAT32 : 'Float32' ;
|
||||
T_FLOAT64 : 'Float64' ;
|
||||
T_UINT8 : 'UInt8' ;
|
||||
T_UINT16 : 'UInt16' ;
|
||||
T_UINT32 : 'UInt32' ;
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||||
T_UINT64 : 'UInt64' ;
|
||||
T_INT8 : 'Int8' ;
|
||||
T_INT16 : 'Int16' ;
|
||||
T_INT32 : 'Int32' ;
|
||||
T_INT64 : 'Int64' ;
|
||||
T_ENUM8 : 'Enum8' ;
|
||||
T_ENUM16 : 'Enum16' ;
|
||||
T_UUID : 'UUID' ;
|
||||
T_DATE : 'Date' ;
|
||||
T_DATETIME : 'DateTime' ;
|
||||
T_STRING : 'String' ;
|
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T_FIXEDSTRING : 'FixedString' ;
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T_NULL : 'Null' ;
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||||
T_INTERVAL_YEAR : 'IntervalYear' ;
|
||||
T_INTERVAL_MONTH : 'IntervalMonth' ;
|
||||
T_INTERVAL_WEEK : 'IntervalWeek' ;
|
||||
T_INTERVAL_DAY : 'IntervalDay' ;
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T_INTERVAL_HOUR : 'IntervalHour' ;
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T_INTERVAL_MINUTE : 'IntervalMinute' ;
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||||
T_INTERVAL_SECOND : 'IntervalSecond' ;
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T_AGGREGATE_FUNCTION : 'AggregateFunction' ;
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// lambda type has unknown name.
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IDENTIFIER
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||||
: [a-zA-Z_] [a-zA-Z_0-9]*
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;
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|
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NUMERIC_LITERAL
|
||||
: DIGIT+ ( '.' DIGIT* )? ( E [-+]? DIGIT+ )?
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||||
| '.' DIGIT+ ( E [-+]? DIGIT+ )?
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||||
;
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||||
|
||||
STRING_LITERAL
|
||||
: '\'' ( ~'\'' | '\\\'' )* '\''
|
||||
;
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||||
|
||||
QUOTED_LITERAL
|
||||
: '`' ( ~'`' )* '`'
|
||||
;
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|
||||
SPACES
|
||||
: [ \u000B\t\r\n] -> channel(HIDDEN)
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||||
;
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|
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UNEXPECTED_CHAR
|
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: .
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;
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|
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fragment DIGIT : [0-9];
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fragment A : [aA];
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fragment B : [bB];
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fragment C : [cC];
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fragment D : [dD];
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||||
fragment E : [eE];
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||||
fragment F : [fF];
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fragment G : [gG];
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fragment H : [hH];
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||||
fragment I : [iI];
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||||
fragment J : [jJ];
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||||
fragment K : [kK];
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fragment L : [lL];
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||||
fragment M : [mM];
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||||
fragment N : [nN];
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||||
fragment O : [oO];
|
||||
fragment P : [pP];
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||||
fragment Q : [qQ];
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||||
fragment R : [rR];
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||||
fragment S : [sS];
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||||
fragment T : [tT];
|
||||
fragment U : [uU];
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||||
fragment V : [vV];
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||||
fragment W : [wW];
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fragment X : [xX];
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fragment Y : [yY];
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fragment Z : [zZ];
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584
utils/grammar/ClickHouseParser.g4
Normal file
584
utils/grammar/ClickHouseParser.g4
Normal file
@ -0,0 +1,584 @@
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parser grammar ClickHouseParser;
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options {
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tokenVocab=ClickHouseLexer;
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}
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// эта грамматика написана по сорсам парсеров, имена правил примерно соответствуют парсерам в cpp.
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// известные расхождения
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// 1. скобки не обязательно сразу идут после имени функции.
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// 2. многословные токены поделены на самостоятельные слова
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// 3. для INSERT запроса не написана часть парсинга значений.
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// 4. правило для expr переписано чтобы понизить глубину AST и сразу выходить на уровень expr - al
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parse
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: ( query | error ) EOF
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;
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query
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: show_tables_query
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||||
| select_query
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| insert_query
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| create_query
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||||
| rename_query
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||||
| drop_query
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||||
| alter_query
|
||||
| use_query
|
||||
| set_query
|
||||
| optimize_query
|
||||
| table_properties_query
|
||||
| show_processlist_query
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||||
| check_query
|
||||
| kill_query_query
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||||
;
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|
||||
// 1. QUERIES
|
||||
|
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select_query
|
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: select_query_main ( K_UNION K_ALL select_query_main ) *
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||||
query_outfile_step?
|
||||
select_format_step?
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||||
;
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||||
|
||||
select_query_main
|
||||
: select_with_step
|
||||
select_select_step select_from_step?
|
||||
K_FINAL? select_sample_step?
|
||||
select_array_join_step? select_join_step?
|
||||
select_prewhere_step? select_where_step?
|
||||
select_groupby_step? select_having_step?
|
||||
select_orderby_step?
|
||||
select_limitby_step? select_limit_step?
|
||||
select_settings_step?
|
||||
;
|
||||
|
||||
select_with_step
|
||||
: K_WITH select_expr_list
|
||||
;
|
||||
|
||||
select_select_step
|
||||
: K_SELECT K_DISTINCT? select_expr_list
|
||||
;
|
||||
|
||||
select_from_step
|
||||
: K_FROM ( full_table_name
|
||||
| table_function
|
||||
| subquery
|
||||
) select_alias?
|
||||
;
|
||||
|
||||
select_array_join_step
|
||||
: K_LEFT? K_ARRAY K_JOIN not_empty_expression_list
|
||||
;
|
||||
|
||||
select_sample_step
|
||||
: K_SAMPLE sample_ratio (K_OFFSET sample_ratio ) ?
|
||||
;
|
||||
|
||||
sample_ratio
|
||||
: NUMERIC_LITERAL ( DIVIDE NUMERIC_LITERAL ) ?
|
||||
;
|
||||
|
||||
select_join_step
|
||||
: K_GLOBAL?
|
||||
( K_ANY | K_ALL ) ( K_INNER | K_LEFT K_OUTER? | K_RIGHT K_OUTER? | K_FULL K_OUTER? ) K_JOIN select_join_right_part
|
||||
( K_USING LPAREN not_empty_expression_list RPAREN
|
||||
| K_USING not_empty_expression_list
|
||||
// | K_ON expr на самом деле нет.
|
||||
)
|
||||
| K_GLOBAL? K_CROSS K_JOIN select_join_right_part
|
||||
;
|
||||
|
||||
select_join_right_part
|
||||
: identifier
|
||||
| subquery
|
||||
;
|
||||
|
||||
select_prewhere_step
|
||||
: K_PREWHERE expression_with_optional_alias
|
||||
;
|
||||
|
||||
select_where_step
|
||||
: K_WHERE expression_with_optional_alias
|
||||
;
|
||||
|
||||
select_groupby_step
|
||||
: K_GROUP K_BY not_empty_expression_list ( K_WITH K_TOTALS ) ?
|
||||
;
|
||||
|
||||
select_having_step
|
||||
: K_HAVING expression_with_optional_alias
|
||||
;
|
||||
|
||||
select_orderby_step
|
||||
: K_ORDER K_BY order_by_expression_list
|
||||
;
|
||||
|
||||
select_limit_step
|
||||
: K_LIMIT NUMERIC_LITERAL ( COMMA NUMERIC_LITERAL )?
|
||||
;
|
||||
|
||||
select_limitby_step
|
||||
: K_LIMIT NUMERIC_LITERAL K_BY not_empty_expression_list
|
||||
;
|
||||
|
||||
select_settings_step
|
||||
: K_SETTINGS assignment_list
|
||||
;
|
||||
|
||||
select_format_step
|
||||
: K_FORMAT identifier
|
||||
;
|
||||
|
||||
insert_query
|
||||
: K_INSERT K_INTO full_table_name
|
||||
( K_ID ASSIGN STRING_LITERAL )? // wtf?
|
||||
( LPAREN column_name_list RPAREN )?
|
||||
( K_VALUES LPAREN literal (COMMA literal )* RPAREN(COMMA LPAREN literal (COMMA literal )* RPAREN)* // ch тут дальше не парсит. а я написал скобки
|
||||
| K_FORMAT format_name // ch тут дальше не парсит, только доедает все пробелы или один перевод строки. pushMode()
|
||||
| select_query )
|
||||
;
|
||||
|
||||
create_query
|
||||
: ( K_CREATE | K_ATTACH ) K_TEMPORARY?
|
||||
( K_DATABASE ( K_IF K_NOT K_EXISTS ) ? database_name
|
||||
| K_TABLE ( K_IF K_NOT K_EXISTS ) ? full_table_name ( K_ON K_CLUSTER cluster_name ) ?
|
||||
( LPAREN column_declaration_list RPAREN engine ( K_AS select_query ) ? // если VIEW - то есть и колонки и select.
|
||||
| engine K_AS ( select_query
|
||||
| full_table_name engine? // wtf
|
||||
)
|
||||
)
|
||||
| K_MATERIALIZED? K_VIEW ( K_IF K_NOT K_EXISTS ) ? full_table_name
|
||||
( LPAREN column_declaration_list RPAREN ) ? engine? K_POPULATE? K_AS select_query
|
||||
)
|
||||
;
|
||||
|
||||
rename_query
|
||||
: K_RENAME K_TABLE full_table_name K_TO full_table_name ( COMMA full_table_name K_TO full_table_name )* ( K_ON K_CLUSTER cluster_name ) ?
|
||||
;
|
||||
|
||||
drop_query
|
||||
: ( K_DROP | K_DETACH )
|
||||
( K_DATABASE ( K_IF K_EXISTS ) ? database_name ( K_ON K_CLUSTER cluster_name ) ?
|
||||
| K_TABLE ( K_IF K_EXISTS ) ? full_table_name ( K_ON K_CLUSTER cluster_name ) ?
|
||||
)
|
||||
;
|
||||
|
||||
alter_query
|
||||
: K_ALTER K_TABLE full_table_name ( K_ON K_CLUSTER cluster_name ) ?
|
||||
alter_query_element ( COMMA alter_query_element ) *
|
||||
;
|
||||
|
||||
alter_query_element
|
||||
: K_ADD K_COLUMN compound_name_type_pair ( K_AFTER column_name ) ?
|
||||
| K_DROP K_COLUMN column_name
|
||||
| K_MODIFY K_COLUMN compound_name_type_pair
|
||||
| K_ATTACH K_PARTITION partition_name
|
||||
| K_DETACH K_PARTITION partition_name
|
||||
| K_DROP K_PARTITION partition_name
|
||||
| K_FETCH K_PARTITION partition_name K_FROM STRING_LITERAL
|
||||
| K_FREEZE K_PARTITION partition_name
|
||||
;
|
||||
|
||||
clickhouse_type
|
||||
: simple_type
|
||||
| T_AGGREGATE_FUNCTION LPAREN function_name ( COMMA clickhouse_type ) * RPAREN
|
||||
| T_ARRAY LPAREN clickhouse_type RPAREN
|
||||
| T_TUPLE LPAREN clickhouse_type ( COMMA clickhouse_type ) * RPAREN
|
||||
| T_NULLABLE LPAREN clickhouse_type LPAREN
|
||||
;
|
||||
|
||||
simple_type
|
||||
: T_UINT8
|
||||
| T_UINT16
|
||||
| T_UINT32
|
||||
| T_UINT64
|
||||
| T_INT8
|
||||
| T_INT16
|
||||
| T_INT32
|
||||
| T_INT64
|
||||
| T_FLOAT32
|
||||
| T_FLOAT64
|
||||
| T_ENUM8 LPAREN enum_entry ( COMMA enum_entry ) * LPAREN
|
||||
| T_ENUM16 LPAREN enum_entry ( COMMA enum_entry ) * LPAREN
|
||||
| T_UUID
|
||||
| T_DATE
|
||||
| T_DATETIME
|
||||
| T_STRING
|
||||
| T_INTERVAL_YEAR
|
||||
| T_INTERVAL_MONTH
|
||||
| T_INTERVAL_WEEK
|
||||
| T_INTERVAL_DAY
|
||||
| T_INTERVAL_HOUR
|
||||
| T_INTERVAL_MINUTE
|
||||
| T_INTERVAL_SECOND
|
||||
| T_NULL
|
||||
| T_FIXEDSTRING LPAREN NUMERIC_LITERAL LPAREN
|
||||
;
|
||||
|
||||
enum_entry
|
||||
: STRING_LITERAL ASSIGN NUMERIC_LITERAL
|
||||
;
|
||||
|
||||
use_query
|
||||
: K_USE database_name
|
||||
;
|
||||
|
||||
set_query
|
||||
: K_SET K_GLOBAL? assignment_list
|
||||
;
|
||||
|
||||
assignment_list
|
||||
: assignment ( COMMA assignment ) *
|
||||
;
|
||||
|
||||
assignment
|
||||
: identifier ASSIGN literal
|
||||
;
|
||||
|
||||
kill_query_query
|
||||
: K_KILL K_QUERY K_WHERE expression_with_optional_alias ( K_SYNC | K_ASYNC | K_TEST )
|
||||
;
|
||||
|
||||
optimize_query
|
||||
: K_OPTIMIZE K_TABLE full_table_name ( K_PARTITION STRING_LITERAL ) ? K_FINAL?
|
||||
;
|
||||
|
||||
table_properties_query
|
||||
: ( K_EXISTS | ( K_DESCRIBE | K_DESC ) | K_SHOW K_CREATE ) K_TABLE full_table_name query_outfile_step? ( K_FORMAT format_name ) ?
|
||||
;
|
||||
|
||||
show_tables_query
|
||||
: K_SHOW ( K_DATABASES
|
||||
| K_TABLES ( K_FROM database_name ) ? ( K_NOT? K_LIKE STRING_LITERAL ) ? )
|
||||
query_outfile_step?
|
||||
( K_FORMAT format_name ) ?
|
||||
;
|
||||
|
||||
show_processlist_query
|
||||
: K_SHOW K_PROCESSLIST query_outfile_step? ( K_FORMAT format_name ) ?
|
||||
;
|
||||
|
||||
check_query
|
||||
: K_CHECK K_TABLE full_table_name
|
||||
;
|
||||
|
||||
// 2. QUERY ELEMENTS
|
||||
|
||||
full_table_name
|
||||
: ( database_name DOT ) ? table_name
|
||||
;
|
||||
|
||||
partition_name
|
||||
: identifier | STRING_LITERAL
|
||||
;
|
||||
|
||||
cluster_name
|
||||
: identifier | STRING_LITERAL
|
||||
;
|
||||
|
||||
database_name
|
||||
: identifier
|
||||
;
|
||||
|
||||
table_name
|
||||
: identifier
|
||||
;
|
||||
|
||||
format_name
|
||||
: identifier
|
||||
;
|
||||
|
||||
query_outfile_step
|
||||
: K_INTO K_OUTFILE STRING_LITERAL
|
||||
;
|
||||
|
||||
engine
|
||||
: K_ENGINE ASSIGN identifier_with_optional_parameters
|
||||
;
|
||||
|
||||
identifier_with_optional_parameters
|
||||
: identifier_with_parameters
|
||||
| identifier
|
||||
;
|
||||
|
||||
identifier_with_parameters
|
||||
: function
|
||||
| nested_table
|
||||
;
|
||||
|
||||
order_by_expression_list
|
||||
: order_by_element ( COMMA order_by_element ) *
|
||||
;
|
||||
|
||||
order_by_element
|
||||
: expression_with_optional_alias ( K_DESC | K_DESCENDING | K_ASC | K_ASCENDING ) ? ( K_NULLS ( K_FIRST | K_LAST ) ) ? ( K_COLLATE STRING_LITERAL ) ?
|
||||
;
|
||||
|
||||
nested_table
|
||||
: identifier LPAREN name_type_pair_list RPAREN
|
||||
;
|
||||
|
||||
name_type_pair_list
|
||||
: name_type_pair ( COMMA name_type_pair ) *
|
||||
;
|
||||
|
||||
name_type_pair
|
||||
: identifier column_type
|
||||
;
|
||||
|
||||
compound_name_type_pair
|
||||
: compound_identifier column_type
|
||||
;
|
||||
|
||||
column_declaration_list
|
||||
: column_declaration ( COMMA column_declaration ) *
|
||||
;
|
||||
|
||||
column_declaration
|
||||
: column_name
|
||||
( ( K_DEFAULT | K_MATERIALIZED | K_ALIAS ) expr
|
||||
| column_type
|
||||
)
|
||||
;
|
||||
|
||||
column_name
|
||||
: identifier
|
||||
;
|
||||
|
||||
column_type
|
||||
: clickhouse_type
|
||||
;
|
||||
|
||||
column_name_list
|
||||
: column_name ( COMMA column_name ) *
|
||||
;
|
||||
|
||||
select_expr_list
|
||||
: select_expr ( COMMA select_expr) *
|
||||
;
|
||||
|
||||
select_expr
|
||||
: expr select_alias?
|
||||
;
|
||||
|
||||
select_alias
|
||||
: K_AS? alias_name
|
||||
;
|
||||
|
||||
alias
|
||||
: K_AS alias_name
|
||||
;
|
||||
|
||||
alias_name
|
||||
: identifier
|
||||
;
|
||||
|
||||
table_function
|
||||
: function
|
||||
;
|
||||
|
||||
|
||||
subquery
|
||||
: LPAREN select_query_main RPAREN
|
||||
;
|
||||
|
||||
expression_with_optional_alias
|
||||
: expr alias?
|
||||
;
|
||||
|
||||
// EXPRESSIONS
|
||||
|
||||
expr
|
||||
: LPAREN expr RPAREN # ExprParen
|
||||
| function # ExprFunction
|
||||
| K_CASE expr? ( K_WHEN expr K_THEN expr ) ( K_WHEN expr K_THEN expr ) * K_ELSE expr K_END # ExprCase
|
||||
| expr DOT expr # ExprTupleElement
|
||||
| expr LBRAKET expr RBRAKET # ExprArrayElement
|
||||
| MINUS expr # ExprUnaryMinus
|
||||
| K_CAST LPAREN expr K_AS clickhouse_type RPAREN # ExprCast
|
||||
| expr ( STAR | DIVIDE | PERCENT ) expr # ExprMul
|
||||
| expr ( PLUS | MINUS ) expr # ExprAdd
|
||||
| expr CONCAT expr # ExprConcat
|
||||
| expr K_BETWEEN expr K_AND expr # ExprBetween
|
||||
| expr ( EQUALS | ASSIGN | NOT_EQUALS | NOT_EQUALS2 | LE | GE | LT | GT | K_LIKE | K_NOT K_LIKE ) expr # ExprLogical
|
||||
| expr ( K_IN | K_NOT K_IN | K_GLOBAL K_IN | K_GLOBAL K_NOT K_IN ) expr # ExprIn
|
||||
| expr ( K_IS K_NULL | K_IS K_NOT K_NULL ) # ExprIsNull
|
||||
| K_INTERVAL expr interval_unit # ExprInterval
|
||||
| K_NOT expr # ExprNot
|
||||
| expr K_AND expr # ExprAnd
|
||||
| expr K_OR expr # ExprOr
|
||||
| expr QUESTION expr COLON expr # ExprTernary
|
||||
| ( LPAREN identifier ( COMMA identifier )* RPAREN | identifier ( COMMA identifier )* ) RARROW expr # ExprLambda
|
||||
| subquery # ExprSubquery
|
||||
| LPAREN not_empty_expression_list RPAREN # ExprList
|
||||
| array # ExprArray
|
||||
| literal # ExprLiteral
|
||||
| compound_identifier # ExprId
|
||||
| STAR # ExprStar
|
||||
| expr alias # ExprWithAlias
|
||||
;
|
||||
|
||||
interval_unit
|
||||
: K_YEAR
|
||||
| K_MONTH
|
||||
| K_WEEK
|
||||
| K_DAY
|
||||
| K_HOUR
|
||||
| K_MINUTE
|
||||
| K_SECOND
|
||||
;
|
||||
expression_list
|
||||
: ( not_empty_expression_list )?
|
||||
;
|
||||
|
||||
not_empty_expression_list
|
||||
: expr ( COMMA expr )*
|
||||
;
|
||||
|
||||
array
|
||||
: LBRAKET expression_list RBRAKET
|
||||
;
|
||||
|
||||
function
|
||||
: function_name function_parameters? function_arguments
|
||||
;
|
||||
|
||||
function_parameters
|
||||
: LPAREN ( expr ( COMMA expr )* )? RPAREN
|
||||
;
|
||||
function_arguments
|
||||
: LPAREN ( expr ( COMMA expr )* )? RPAREN
|
||||
;
|
||||
|
||||
function_name
|
||||
: identifier
|
||||
;
|
||||
|
||||
identifier
|
||||
: QUOTED_LITERAL
|
||||
| IDENTIFIER
|
||||
// в данном случае мы разрешаем ключевым словам выступать в качестве имен колонок или функций.
|
||||
| simple_type
|
||||
| keyword
|
||||
;
|
||||
|
||||
keyword
|
||||
: K_ADD
|
||||
| K_AFTER
|
||||
| K_ALL
|
||||
| K_ALIAS
|
||||
| K_ALTER
|
||||
| K_AND
|
||||
| K_ANY
|
||||
| K_ARRAY
|
||||
| K_AS
|
||||
| K_ASCENDING
|
||||
| K_ASC
|
||||
| K_ASYNC
|
||||
| K_ATTACH
|
||||
| K_BETWEEN
|
||||
| K_BY
|
||||
| K_CASE
|
||||
| K_CHECK
|
||||
| K_COLUMN
|
||||
| K_COLLATE
|
||||
| K_CREATE
|
||||
| K_CROSS
|
||||
| K_DESCRIBE
|
||||
| K_DESCENDING
|
||||
| K_DESC
|
||||
| K_DATABASE
|
||||
| K_DATABASES
|
||||
| K_DEFAULT
|
||||
| K_DETACH
|
||||
| K_DISTINCT
|
||||
| K_DROP
|
||||
| K_ENGINE
|
||||
| K_ELSE
|
||||
| K_END
|
||||
| K_EXISTS
|
||||
| K_FINAL
|
||||
| K_FIRST
|
||||
| K_FROM
|
||||
| K_FORMAT
|
||||
| K_FULL
|
||||
| K_GLOBAL
|
||||
| K_GROUP
|
||||
| K_HAVING
|
||||
| K_ID
|
||||
| K_IF
|
||||
| K_INNER
|
||||
| K_INSERT
|
||||
| K_INTO
|
||||
| K_IN
|
||||
| K_IS
|
||||
| K_JOIN
|
||||
| K_KILL
|
||||
| K_LAST
|
||||
| K_LEFT
|
||||
| K_LIKE
|
||||
| K_LIMIT
|
||||
| K_MAIN
|
||||
| K_MATERIALIZED
|
||||
| K_MODIFY
|
||||
| K_NOT
|
||||
| K_NULL
|
||||
| K_NULLS
|
||||
| K_OFFSET
|
||||
| K_ON
|
||||
| K_OPTIMIZE
|
||||
| K_ORDER
|
||||
| K_OR
|
||||
| K_OUTFILE
|
||||
| K_PARTITION
|
||||
| K_POPULATE
|
||||
| K_PREWHERE
|
||||
| K_PROCESSLIST
|
||||
| K_QUERY
|
||||
| K_RENAME
|
||||
| K_RETURN
|
||||
| K_RIGHT
|
||||
| K_SAMPLE
|
||||
| K_SELECT
|
||||
| K_SET
|
||||
| K_SETTINGS
|
||||
| K_SHOW
|
||||
| K_SYNC
|
||||
| K_TABLE
|
||||
| K_TABLES
|
||||
| K_TEMPORARY
|
||||
| K_TEST
|
||||
| K_THEN
|
||||
| K_TOTALS
|
||||
| K_TO
|
||||
| K_OUTER
|
||||
| K_VALUES
|
||||
| K_VIEW
|
||||
| K_UNION
|
||||
| K_USE
|
||||
| K_USING
|
||||
| K_WHEN
|
||||
| K_WHERE
|
||||
| K_WITH
|
||||
;
|
||||
|
||||
compound_identifier
|
||||
: identifier DOT identifier
|
||||
| identifier
|
||||
;
|
||||
|
||||
|
||||
literal
|
||||
: K_NULL
|
||||
| NUMERIC_LITERAL
|
||||
| STRING_LITERAL
|
||||
;
|
||||
|
||||
error
|
||||
: UNEXPECTED_CHAR
|
||||
{
|
||||
throw new RuntimeException("UNEXPECTED_CHAR=" + $UNEXPECTED_CHAR.text);
|
||||
}
|
||||
;
|
||||
|
||||
7
utils/grammar/README.md
Normal file
7
utils/grammar/README.md
Normal file
@ -0,0 +1,7 @@
|
||||
=== ClickHouse grammar for ANTLR4
|
||||
|
||||
Authors: Yuriy Galitskiy (orantius, https://github.com/duremar), Sergey Serebryanik (serebrserg, https://github.com/serebrserg), Efim Pyshnograev (graev).
|
||||
|
||||
Initially developed for Yandex.Metrica product and published under Apache 2.0 license with permission from Yandex. It has also found its usage in DataGrip product.
|
||||
|
||||
It is not used in ClickHouse directly and is not synchronized with ClickHouse C++ code. Neither supported or tested. Any help welcome.
|
||||
Loading…
Reference in New Issue
Block a user