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SqlBase.g4
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SqlBase.g4
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/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file is an adaptation of Presto's presto-parser/src/main/antlr4/com/facebook/presto/sql/parser/SqlBase.g4 grammar.
*/
grammar SqlBase;
@members {
"""
When false, INTERSECT is given the greater precedence over the other set
operations (UNION, EXCEPT and MINUS) as per the SQL standard.
"""
legacy_setops_precedence_enbled = False
"""
When false, a literal with an exponent would be converted into
double type rather than decimal type.
"""
legacy_exponent_literal_as_decimal_enabled = False
"""
When false, CREATE TABLE syntax without a provider will use
the value of spark.sql.sources.default as its provider.
"""
legacy_create_hive_table_by_default_enabled = False
"""
When true, the behavior of keywords follows ANSI SQL standard.
"""
SQL_standard_keyword_behavior = False
def isValidDecimal(self):
"""
Verify whether current token is a valid decimal token (which contains dot).
Returns true if the character that follows the token is not a digit or letter or underscore.
For example:
For char stream "2.3", "2." is not a valid decimal token, because it is followed by digit '3'.
For char stream "2.3_", "2.3" is not a valid decimal token, because it is followed by '_'.
For char stream "2.3W", "2.3" is not a valid decimal token, because it is followed by 'W'.
For char stream "12.0D 34.E2+0.12 " 12.0D is a valid decimal token because it is followed
by a space. 34.E2 is a valid decimal token because it is followed by symbol '+'
which is not a digit or letter or underscore.
"""
nextChar = self._input.LA(1)
if 'A' <= nextChar <= 'Z' or '0' <= nextChar <= '9' or nextChar == '_':
return False
else:
return True
def isHint(self):
"""
This method will be called when we see '/*' and try to match it as a bracketed comment.
If the next character is '+', it should be parsed as hint later, and we cannot match
it as a bracketed comment.
Returns true if the next character is '+'.
"""
nextChar = self._input.LA(1)
if nextChar == '+':
return True
else:
return False
}
singleStatement
: statement ';'* EOF
;
singleExpression
: namedExpression EOF
;
singleTableIdentifier
: tableIdentifier EOF
;
singleMultipartIdentifier
: multipartIdentifier EOF
;
singleFunctionIdentifier
: functionIdentifier EOF
;
singleDataType
: dataType EOF
;
singleTableSchema
: colTypeList EOF
;
statement
: query #statementDefault
| ctes? dmlStatementNoWith #dmlStatement
| USE NAMESPACE? multipartIdentifier #use
| CREATE namespace (IF NOT EXISTS)? multipartIdentifier
(commentSpec |
locationSpec |
(WITH (DBPROPERTIES | PROPERTIES) tablePropertyList))* #createNamespace
| ALTER namespace multipartIdentifier
SET (DBPROPERTIES | PROPERTIES) tablePropertyList #setNamespaceProperties
| ALTER namespace multipartIdentifier
SET locationSpec #setNamespaceLocation
| DROP namespace (IF EXISTS)? multipartIdentifier
(RESTRICT | CASCADE)? #dropNamespace
| SHOW (DATABASES | NAMESPACES) ((FROM | IN) multipartIdentifier)?
(LIKE? pattern=STRING)? #showNamespaces
| {not self.legacy_create_hive_table_by_default_enabled}?
createTableHeader ('(' colTypeList ')')? tableProvider?
createTableClauses
(AS? query)? #createTable
| {self.legacy_create_hive_table_by_default_enabled}?
createTableHeader ('(' colTypeList ')')? tableProvider
createTableClauses
(AS? query)? #createTable
| createTableHeader ('(' columns=colTypeList ')')?
(commentSpec |
(PARTITIONED BY '(' partitionColumns=colTypeList ')' |
PARTITIONED BY partitionColumnNames=identifierList) |
bucketSpec |
skewSpec |
rowFormat |
createFileFormat |
locationSpec |
(TBLPROPERTIES tableProps=tablePropertyList))*
(AS? query)? #createHiveTable
| CREATE TABLE (IF NOT EXISTS)? target=tableIdentifier
LIKE source=tableIdentifier
(tableProvider |
rowFormat |
createFileFormat |
locationSpec |
(TBLPROPERTIES tableProps=tablePropertyList))* #createTableLike
| replaceTableHeader ('(' colTypeList ')')? tableProvider
createTableClauses
(AS? query)? #replaceTable
| ANALYZE TABLE multipartIdentifier partitionSpec? COMPUTE STATISTICS
(identifier | FOR COLUMNS identifierSeq | FOR ALL COLUMNS)? #analyze
| ALTER TABLE multipartIdentifier
ADD (COLUMN | COLUMNS)
columns=qualifiedColTypeWithPositionList #addTableColumns
| ALTER TABLE multipartIdentifier
ADD (COLUMN | COLUMNS)
'(' columns=qualifiedColTypeWithPositionList ')' #addTableColumns
| ALTER TABLE table=multipartIdentifier
RENAME COLUMN
from_=multipartIdentifier TO to=errorCapturingIdentifier #renameTableColumn
| ALTER TABLE multipartIdentifier
DROP (COLUMN | COLUMNS)
'(' columns=multipartIdentifierList ')' #dropTableColumns
| ALTER TABLE multipartIdentifier
DROP (COLUMN | COLUMNS) columns=multipartIdentifierList #dropTableColumns
| ALTER (TABLE | VIEW) from_=multipartIdentifier
RENAME TO to=multipartIdentifier #renameTable
| ALTER (TABLE | VIEW) multipartIdentifier
SET TBLPROPERTIES tablePropertyList #setTableProperties
| ALTER (TABLE | VIEW) multipartIdentifier
UNSET TBLPROPERTIES (IF EXISTS)? tablePropertyList #unsetTableProperties
| ALTER TABLE table=multipartIdentifier
(ALTER | CHANGE) COLUMN? column=multipartIdentifier
alterColumnAction? #alterTableAlterColumn
| ALTER TABLE table=multipartIdentifier partitionSpec?
CHANGE COLUMN?
colName=multipartIdentifier colType colPosition? #hiveChangeColumn
| ALTER TABLE table=multipartIdentifier partitionSpec?
REPLACE COLUMNS
'(' columns=qualifiedColTypeWithPositionList ')' #hiveReplaceColumns
| ALTER TABLE multipartIdentifier (partitionSpec)?
SET SERDE STRING (WITH SERDEPROPERTIES tablePropertyList)? #setTableSerDe
| ALTER TABLE multipartIdentifier (partitionSpec)?
SET SERDEPROPERTIES tablePropertyList #setTableSerDe
| ALTER (TABLE | VIEW) multipartIdentifier ADD (IF NOT EXISTS)?
partitionSpecLocation+ #addTablePartition
| ALTER TABLE multipartIdentifier
from_=partitionSpec RENAME TO to=partitionSpec #renameTablePartition
| ALTER (TABLE | VIEW) multipartIdentifier
DROP (IF EXISTS)? partitionSpec (',' partitionSpec)* PURGE? #dropTablePartitions
| ALTER TABLE multipartIdentifier
(partitionSpec)? SET locationSpec #setTableLocation
| ALTER TABLE multipartIdentifier RECOVER PARTITIONS #recoverPartitions
| DROP TABLE (IF EXISTS)? multipartIdentifier PURGE? #dropTable
| DROP VIEW (IF EXISTS)? multipartIdentifier #dropView
| CREATE (OR REPLACE)? (GLOBAL? TEMPORARY)?
VIEW (IF NOT EXISTS)? multipartIdentifier
identifierCommentList?
(commentSpec |
(PARTITIONED ON identifierList) |
(TBLPROPERTIES tablePropertyList))*
AS query #createView
| CREATE (OR REPLACE)? GLOBAL? TEMPORARY VIEW
tableIdentifier ('(' colTypeList ')')? tableProvider
(OPTIONS tablePropertyList)? #createTempViewUsing
| ALTER VIEW multipartIdentifier AS? query #alterViewQuery
| CREATE (OR REPLACE)? TEMPORARY? FUNCTION (IF NOT EXISTS)?
multipartIdentifier AS className=STRING
(USING resource (',' resource)*)? #createFunction
| DROP TEMPORARY? FUNCTION (IF EXISTS)? multipartIdentifier #dropFunction
| EXPLAIN (LOGICAL | FORMATTED | EXTENDED | CODEGEN | COST)?
statement #explain
| SHOW TABLES ((FROM | IN) multipartIdentifier)?
(LIKE? pattern=STRING)? #showTables
| SHOW TABLE EXTENDED ((FROM | IN) ns=multipartIdentifier)?
LIKE pattern=STRING partitionSpec? #showTable
| SHOW TBLPROPERTIES table=multipartIdentifier
('(' key=tablePropertyKey ')')? #showTblProperties
| SHOW COLUMNS (FROM | IN) table=multipartIdentifier
((FROM | IN) ns=multipartIdentifier)? #showColumns
| SHOW VIEWS ((FROM | IN) multipartIdentifier)?
(LIKE? pattern=STRING)? #showViews
| SHOW PARTITIONS multipartIdentifier partitionSpec? #showPartitions
| SHOW identifier? FUNCTIONS
(LIKE? (multipartIdentifier | pattern=STRING))? #showFunctions
| SHOW CREATE TABLE multipartIdentifier (AS SERDE)? #showCreateTable
| SHOW CURRENT NAMESPACE #showCurrentNamespace
| (DESC | DESCRIBE) FUNCTION EXTENDED? describeFuncName #describeFunction
| (DESC | DESCRIBE) namespace EXTENDED?
multipartIdentifier #describeNamespace
| (DESC | DESCRIBE) TABLE? option=(EXTENDED | FORMATTED)?
multipartIdentifier partitionSpec? describeColName? #describeRelation
| (DESC | DESCRIBE) QUERY? query #describeQuery
| COMMENT ON namespace multipartIdentifier IS
comment=(STRING | NULL) #commentNamespace
| COMMENT ON TABLE multipartIdentifier IS comment=(STRING | NULL) #commentTable
| REFRESH TABLE multipartIdentifier #refreshTable
| REFRESH (STRING | .*?) #refreshResource
| CACHE LAZY? TABLE multipartIdentifier
(OPTIONS options=tablePropertyList)? (AS? query)? #cacheTable
| UNCACHE TABLE (IF EXISTS)? multipartIdentifier #uncacheTable
| CLEAR CACHE #clearCache
| LOAD DATA LOCAL? INPATH path=STRING OVERWRITE? INTO TABLE
multipartIdentifier partitionSpec? #loadData
| TRUNCATE TABLE multipartIdentifier partitionSpec? #truncateTable
| MSCK REPAIR TABLE multipartIdentifier #repairTable
| op=(ADD | LIST) identifier (STRING | .*?) #manageResource
| SET ROLE .*? #failNativeCommand
| SET .*? #setConfiguration
| RESET #resetConfiguration
| unsupportedHiveNativeCommands .*? #failNativeCommand
;
unsupportedHiveNativeCommands
: kw1=CREATE kw2=ROLE
| kw1=DROP kw2=ROLE
| kw1=GRANT kw2=ROLE?
| kw1=REVOKE kw2=ROLE?
| kw1=SHOW kw2=GRANT
| kw1=SHOW kw2=ROLE kw3=GRANT?
| kw1=SHOW kw2=PRINCIPALS
| kw1=SHOW kw2=ROLES
| kw1=SHOW kw2=CURRENT kw3=ROLES
| kw1=EXPORT kw2=TABLE
| kw1=IMPORT kw2=TABLE
| kw1=SHOW kw2=COMPACTIONS
| kw1=SHOW kw2=CREATE kw3=TABLE
| kw1=SHOW kw2=TRANSACTIONS
| kw1=SHOW kw2=INDEXES
| kw1=SHOW kw2=LOCKS
| kw1=CREATE kw2=INDEX
| kw1=DROP kw2=INDEX
| kw1=ALTER kw2=INDEX
| kw1=LOCK kw2=TABLE
| kw1=LOCK kw2=DATABASE
| kw1=UNLOCK kw2=TABLE
| kw1=UNLOCK kw2=DATABASE
| kw1=CREATE kw2=TEMPORARY kw3=MACRO
| kw1=DROP kw2=TEMPORARY kw3=MACRO
| kw1=ALTER kw2=TABLE tableIdentifier kw3=NOT kw4=CLUSTERED
| kw1=ALTER kw2=TABLE tableIdentifier kw3=CLUSTERED kw4=BY
| kw1=ALTER kw2=TABLE tableIdentifier kw3=NOT kw4=SORTED
| kw1=ALTER kw2=TABLE tableIdentifier kw3=SKEWED kw4=BY
| kw1=ALTER kw2=TABLE tableIdentifier kw3=NOT kw4=SKEWED
| kw1=ALTER kw2=TABLE tableIdentifier kw3=NOT kw4=STORED kw5=AS kw6=DIRECTORIES
| kw1=ALTER kw2=TABLE tableIdentifier kw3=SET kw4=SKEWED kw5=LOCATION
| kw1=ALTER kw2=TABLE tableIdentifier kw3=EXCHANGE kw4=PARTITION
| kw1=ALTER kw2=TABLE tableIdentifier kw3=ARCHIVE kw4=PARTITION
| kw1=ALTER kw2=TABLE tableIdentifier kw3=UNARCHIVE kw4=PARTITION
| kw1=ALTER kw2=TABLE tableIdentifier kw3=TOUCH
| kw1=ALTER kw2=TABLE tableIdentifier partitionSpec? kw3=COMPACT
| kw1=ALTER kw2=TABLE tableIdentifier partitionSpec? kw3=CONCATENATE
| kw1=ALTER kw2=TABLE tableIdentifier partitionSpec? kw3=SET kw4=FILEFORMAT
| kw1=ALTER kw2=TABLE tableIdentifier partitionSpec? kw3=REPLACE kw4=COLUMNS
| kw1=START kw2=TRANSACTION
| kw1=COMMIT
| kw1=ROLLBACK
| kw1=DFS
;
createTableHeader
: CREATE TEMPORARY? EXTERNAL? TABLE (IF NOT EXISTS)? multipartIdentifier
;
replaceTableHeader
: (CREATE OR)? REPLACE TABLE multipartIdentifier
;
bucketSpec
: CLUSTERED BY identifierList
(SORTED BY orderedIdentifierList)?
INTO INTEGER_VALUE BUCKETS
;
skewSpec
: SKEWED BY identifierList
ON (constantList | nestedConstantList)
(STORED AS DIRECTORIES)?
;
locationSpec
: LOCATION STRING
;
commentSpec
: COMMENT STRING
;
query
: ctes? queryTerm queryOrganization
;
insertInto
: INSERT OVERWRITE TABLE? multipartIdentifier (partitionSpec (IF NOT EXISTS)?)? #insertOverwriteTable
| INSERT INTO TABLE? multipartIdentifier partitionSpec? (IF NOT EXISTS)? #insertIntoTable
| INSERT OVERWRITE LOCAL? DIRECTORY path=STRING rowFormat? createFileFormat? #insertOverwriteHiveDir
| INSERT OVERWRITE LOCAL? DIRECTORY (path=STRING)? tableProvider (OPTIONS options=tablePropertyList)? #insertOverwriteDir
;
partitionSpecLocation
: partitionSpec locationSpec?
;
partitionSpec
: PARTITION '(' partitionVal (',' partitionVal)* ')'
;
partitionVal
: identifier (EQ constant)?
;
namespace
: NAMESPACE
| DATABASE
| SCHEMA
;
describeFuncName
: qualifiedName
| STRING
| comparisonOperator
| arithmeticOperator
| predicateOperator
;
describeColName
: nameParts+=identifier ('.' nameParts+=identifier)*
;
ctes
: WITH namedQuery (',' namedQuery)*
;
namedQuery
: name=errorCapturingIdentifier (columnAliases=identifierList)? AS? '(' query ')'
;
tableProvider
: USING multipartIdentifier
;
createTableClauses
:((OPTIONS options=tablePropertyList) |
(PARTITIONED BY partitioning=transformList) |
bucketSpec |
locationSpec |
commentSpec |
(TBLPROPERTIES tableProps=tablePropertyList))*
;
tablePropertyList
: '(' tableProperty (',' tableProperty)* ')'
;
tableProperty
: key=tablePropertyKey (EQ? value=tablePropertyValue)?
;
tablePropertyKey
: identifier ('.' identifier)*
| STRING
;
tablePropertyValue
: INTEGER_VALUE
| DECIMAL_VALUE
| booleanValue
| STRING
;
constantList
: '(' constant (',' constant)* ')'
;
nestedConstantList
: '(' constantList (',' constantList)* ')'
;
createFileFormat
: STORED AS fileFormat
| STORED BY storageHandler
;
fileFormat
: INPUTFORMAT inFmt=STRING OUTPUTFORMAT outFmt=STRING #tableFileFormat
| identifier #genericFileFormat
;
storageHandler
: STRING (WITH SERDEPROPERTIES tablePropertyList)?
;
resource
: identifier STRING
;
dmlStatementNoWith
: insertInto queryTerm queryOrganization #singleInsertQuery
| fromClause multiInsertQueryBody+ #multiInsertQuery
| DELETE FROM multipartIdentifier tableAlias whereClause? #deleteFromTable
| UPDATE multipartIdentifier tableAlias setClause whereClause? #updateTable
| MERGE INTO target=multipartIdentifier targetAlias=tableAlias
USING (source=multipartIdentifier |
'(' sourceQuery=query')') sourceAlias=tableAlias
ON mergeCondition=booleanExpression
matchedClause*
notMatchedClause* #mergeIntoTable
;
queryOrganization
: (ORDER BY order+=sortItem (',' order+=sortItem)*)?
(CLUSTER BY clusterBy+=expression (',' clusterBy+=expression)*)?
(DISTRIBUTE BY distributeBy+=expression (',' distributeBy+=expression)*)?
(SORT BY sort+=sortItem (',' sort+=sortItem)*)?
windowClause?
(LIMIT (ALL | limit=expression))?
;
multiInsertQueryBody
: insertInto fromStatementBody
;
queryTerm
: queryPrimary #queryTermDefault
| left=queryTerm {self.legacy_setops_precedence_enbled}?
operator=(INTERSECT | UNION | EXCEPT | SETMINUS) setQuantifier? right=queryTerm #setOperation
| left=queryTerm {not self.legacy_setops_precedence_enbled}?
operator=INTERSECT setQuantifier? right=queryTerm #setOperation
| left=queryTerm {not self.legacy_setops_precedence_enbled}?
operator=(UNION | EXCEPT | SETMINUS) setQuantifier? right=queryTerm #setOperation
;
queryPrimary
: querySpecification #queryPrimaryDefault
| fromStatement #fromStmt
| TABLE multipartIdentifier #table
| inlineTable #inlineTableDefault1
| '(' query ')' #subquery
;
sortItem
: expression ordering=(ASC | DESC)? (NULLS nullOrder=(LAST | FIRST))?
;
fromStatement
: fromClause fromStatementBody+
;
fromStatementBody
: transformClause
whereClause?
queryOrganization
| selectClause
lateralView*
whereClause?
aggregationClause?
havingClause?
windowClause?
queryOrganization
;
querySpecification
: transformClause
fromClause?
whereClause? #transformQuerySpecification
| selectClause
fromClause?
lateralView*
whereClause?
aggregationClause?
havingClause?
windowClause? #regularQuerySpecification
;
transformClause
: (SELECT kind=TRANSFORM '(' namedExpressionSeq ')'
| kind=MAP namedExpressionSeq
| kind=REDUCE namedExpressionSeq)
inRowFormat=rowFormat?
(RECORDWRITER recordWriter=STRING)?
USING script=STRING
(AS (identifierSeq | colTypeList | ('(' (identifierSeq | colTypeList) ')')))?
outRowFormat=rowFormat?
(RECORDREADER recordReader=STRING)?
;
selectClause
: SELECT (hints+=hint)* setQuantifier? namedExpressionSeq
;
setClause
: SET assignmentList
;
matchedClause
: WHEN MATCHED (AND matchedCond=booleanExpression)? THEN matchedAction
;
notMatchedClause
: WHEN NOT MATCHED (AND notMatchedCond=booleanExpression)? THEN notMatchedAction
;
matchedAction
: DELETE
| UPDATE SET ASTERISK
| UPDATE SET assignmentList
;
notMatchedAction
: INSERT ASTERISK
| INSERT '(' columns=multipartIdentifierList ')'
VALUES '(' expression (',' expression)* ')'
;
assignmentList
: assignment (',' assignment)*
;
assignment
: key=multipartIdentifier EQ value=expression
;
whereClause
: WHERE booleanExpression
;
havingClause
: HAVING booleanExpression
;
hint
: '/*+' hintStatements+=hintStatement (','? hintStatements+=hintStatement)* '*/'
;
hintStatement
: hintName=identifier
| hintName=identifier '(' parameters+=primaryExpression (',' parameters+=primaryExpression)* ')'
;
fromClause
: FROM relation (',' relation)* lateralView* pivotClause?
;
aggregationClause
: GROUP BY groupingExpressions+=expression (',' groupingExpressions+=expression)* (
WITH kind=ROLLUP
| WITH kind=CUBE
| kind=GROUPING SETS '(' groupingSet (',' groupingSet)* ')')?
| GROUP BY kind=GROUPING SETS '(' groupingSet (',' groupingSet)* ')'
;
groupingSet
: '(' (expression (',' expression)*)? ')'
| expression
;
pivotClause
: PIVOT '(' aggregates=namedExpressionSeq FOR pivotColumn IN '(' pivotValues+=pivotValue (',' pivotValues+=pivotValue)* ')' ')'
;
pivotColumn
: identifiers+=identifier
| '(' identifiers+=identifier (',' identifiers+=identifier)* ')'
;
pivotValue
: expression (AS? identifier)?
;
lateralView
: LATERAL VIEW (OUTER)? qualifiedName '(' (expression (',' expression)*)? ')' tblName=identifier (AS? colName+=identifier (',' colName+=identifier)*)?
;
setQuantifier
: DISTINCT
| ALL
;
relation
: relationPrimary joinRelation*
;
joinRelation
: (joinType) JOIN right=relationPrimary joinCriteria?
| NATURAL joinType JOIN right=relationPrimary
;
joinType
: INNER?
| CROSS
| LEFT OUTER?
| LEFT? SEMI
| RIGHT OUTER?
| FULL OUTER?
| LEFT? ANTI
;
joinCriteria
: ON booleanExpression
| USING identifierList
;
sample
: TABLESAMPLE '(' sampleMethod? ')'
;
sampleMethod
: negativeSign=MINUS? percentage=(INTEGER_VALUE | DECIMAL_VALUE) PERCENTLIT #sampleByPercentile
| expression ROWS #sampleByRows
| sampleType=BUCKET numerator=INTEGER_VALUE OUT OF denominator=INTEGER_VALUE
(ON (identifier | qualifiedName '(' ')'))? #sampleByBucket
| bytes=expression #sampleByBytes
;
identifierList
: '(' identifierSeq ')'
;
identifierSeq
: ident+=errorCapturingIdentifier (',' ident+=errorCapturingIdentifier)*
;
orderedIdentifierList
: '(' orderedIdentifier (',' orderedIdentifier)* ')'
;
orderedIdentifier
: ident=errorCapturingIdentifier ordering=(ASC | DESC)?
;
identifierCommentList
: '(' identifierComment (',' identifierComment)* ')'
;
identifierComment
: identifier commentSpec?
;
relationPrimary
: multipartIdentifier sample? tableAlias #tableName
| '(' query ')' sample? tableAlias #aliasedQuery
| '(' relation ')' sample? tableAlias #aliasedRelation
| inlineTable #inlineTableDefault2
| functionTable #tableValuedFunction
;
inlineTable
: VALUES expression (',' expression)* tableAlias
;
functionTable
: funcName=errorCapturingIdentifier '(' (expression (',' expression)*)? ')' tableAlias
;
tableAlias
: (AS? strictIdentifier identifierList?)?
;
rowFormat
: ROW FORMAT SERDE name=STRING (WITH SERDEPROPERTIES props=tablePropertyList)? #rowFormatSerde
| ROW FORMAT DELIMITED
(FIELDS TERMINATED BY fieldsTerminatedBy=STRING (ESCAPED BY escapedBy=STRING)?)?
(COLLECTION ITEMS TERMINATED BY collectionItemsTerminatedBy=STRING)?
(MAP KEYS TERMINATED BY keysTerminatedBy=STRING)?
(LINES TERMINATED BY linesSeparatedBy=STRING)?
(NULL DEFINED AS nullDefinedAs=STRING)? #rowFormatDelimited
;
multipartIdentifierList
: multipartIdentifier (',' multipartIdentifier)*
;
multipartIdentifier
: parts+=errorCapturingIdentifier ('.' parts+=errorCapturingIdentifier)*
;
tableIdentifier
: (db=errorCapturingIdentifier '.')? table=errorCapturingIdentifier
;
functionIdentifier
: (db=errorCapturingIdentifier '.')? function=errorCapturingIdentifier
;
namedExpression
: expression (AS? (name=errorCapturingIdentifier | identifierList))?
;
namedExpressionSeq
: namedExpression (',' namedExpression)*
;
transformList
: '(' transforms+=transform (',' transforms+=transform)* ')'
;
transform
: qualifiedName #identityTransform
| transformName=identifier
'(' argument+=transformArgument (',' argument+=transformArgument)* ')' #applyTransform
;
transformArgument
: qualifiedName
| constant
;
expression
: booleanExpression
;
booleanExpression
: NOT booleanExpression #logicalNot
| EXISTS '(' query ')' #exists
| valueExpression predicate? #predicated
| left=booleanExpression operator=AND right=booleanExpression #logicalBinary
| left=booleanExpression operator=OR right=booleanExpression #logicalBinary
;
predicate
: NOT? kind=BETWEEN lower=valueExpression AND upper=valueExpression
| NOT? kind=IN '(' expression (',' expression)* ')'
| NOT? kind=IN '(' query ')'
| NOT? kind=RLIKE pattern=valueExpression
| NOT? kind=LIKE quantifier=(ANY | SOME | ALL) ('('')' | '(' expression (',' expression)* ')')
| NOT? kind=LIKE pattern=valueExpression (ESCAPE escapeChar=STRING)?
| IS NOT? kind=NULL
| IS NOT? kind=(TRUE | FALSE | UNKNOWN)
| IS NOT? kind=DISTINCT FROM right=valueExpression
;
valueExpression
: primaryExpression #valueExpressionDefault
| operator=(MINUS | PLUS | TILDE) valueExpression #arithmeticUnary
| left=valueExpression operator=(ASTERISK | SLASH | PERCENT | DIV) right=valueExpression #arithmeticBinary
| left=valueExpression operator=(PLUS | MINUS | CONCAT_PIPE) right=valueExpression #arithmeticBinary
| left=valueExpression operator=AMPERSAND right=valueExpression #arithmeticBinary
| left=valueExpression operator=HAT right=valueExpression #arithmeticBinary
| left=valueExpression operator=PIPE right=valueExpression #arithmeticBinary
| left=valueExpression comparisonOperator right=valueExpression #comparison
;
primaryExpression
: name=(CURRENT_DATE | CURRENT_TIMESTAMP) #currentDatetime
| CASE whenClause+ (ELSE elseExpression=expression)? END #searchedCase
| CASE value=expression whenClause+ (ELSE elseExpression=expression)? END #simpleCase
| CAST '(' expression AS dataType ')' #cast
| STRUCT '(' (argument+=namedExpression (',' argument+=namedExpression)*)? ')' #struct
| FIRST '(' expression (IGNORE NULLS)? ')' #first
| LAST '(' expression (IGNORE NULLS)? ')' #last
| POSITION '(' substr=valueExpression IN str=valueExpression ')' #position
| constant #constantDefault
| ASTERISK #star
| qualifiedName '.' ASTERISK #star
| '(' namedExpression (',' namedExpression)+ ')' #rowConstructor
| '(' query ')' #subqueryExpression
| functionName '(' (setQuantifier? argument+=expression (',' argument+=expression)*)? ')'
(FILTER '(' WHERE where=booleanExpression ')')? (OVER windowSpec)? #functionCall
| identifier '->' expression #lambda
| '(' identifier (',' identifier)+ ')' '->' expression #lambda
| value=primaryExpression '[' index=valueExpression ']' #subscript
| identifier #columnReference
| base=primaryExpression '.' fieldName=identifier #dereference
| '(' expression ')' #parenthesizedExpression
| EXTRACT '(' field=identifier FROM source=valueExpression ')' #extract
| (SUBSTR | SUBSTRING) '(' str=valueExpression (FROM | ',') pos=valueExpression
((FOR | ',') len=valueExpression)? ')' #substring
| TRIM '(' trimOption=(BOTH | LEADING | TRAILING)? (trimStr=valueExpression)?
FROM srcStr=valueExpression ')' #trim
| OVERLAY '(' input=valueExpression PLACING replace=valueExpression
FROM position=valueExpression (FOR length=valueExpression)? ')' #overlay
;
constant
: NULL #nullLiteral
| interval #intervalLiteral
| identifier STRING #typeConstructor
| number #numericLiteral
| booleanValue #booleanLiteral
| STRING+ #stringLiteral
;
comparisonOperator
: EQ | NEQ | NEQJ | LT | LTE | GT | GTE | NSEQ
;
arithmeticOperator
: PLUS | MINUS | ASTERISK | SLASH | PERCENT | DIV | TILDE | AMPERSAND | PIPE | CONCAT_PIPE | HAT
;
predicateOperator
: OR | AND | IN | NOT
;
booleanValue
: TRUE | FALSE
;
interval
: INTERVAL (errorCapturingMultiUnitsInterval | errorCapturingUnitToUnitInterval)?
;
errorCapturingMultiUnitsInterval
: multiUnitsInterval unitToUnitInterval?
;
multiUnitsInterval
: (intervalValue intervalUnit)+
;
errorCapturingUnitToUnitInterval
: body=unitToUnitInterval (error1=multiUnitsInterval | error2=unitToUnitInterval)?
;
unitToUnitInterval
: value=intervalValue from_=intervalUnit TO to=intervalUnit
;
intervalValue
: (PLUS | MINUS)? (INTEGER_VALUE | DECIMAL_VALUE)
| STRING
;
intervalUnit
: DAY
| HOUR
| MINUTE
| MONTH
| SECOND
| YEAR
| identifier
;
colPosition
: position=FIRST | position=AFTER afterCol=errorCapturingIdentifier
;
dataType
: complex=ARRAY '<' dataType '>' #complexDataType
| complex=MAP '<' dataType ',' dataType '>' #complexDataType
| complex=STRUCT ('<' complexColTypeList? '>' | NEQ) #complexDataType
| identifier ('(' INTEGER_VALUE (',' INTEGER_VALUE)* ')')? #primitiveDataType
;
qualifiedColTypeWithPositionList
: qualifiedColTypeWithPosition (',' qualifiedColTypeWithPosition)*
;
qualifiedColTypeWithPosition
: name=multipartIdentifier dataType (NOT NULL)? commentSpec? colPosition?
;
colTypeList
: colType (',' colType)*
;
colType
: colName=errorCapturingIdentifier dataType (NOT NULL)? commentSpec?
;
complexColTypeList
: complexColType (',' complexColType)*
;
complexColType
: identifier ':' dataType (NOT NULL)? commentSpec?
;
whenClause
: WHEN condition=expression THEN result=expression
;
windowClause
: WINDOW namedWindow (',' namedWindow)*
;
namedWindow
: name=errorCapturingIdentifier AS windowSpec
;
windowSpec
: name=errorCapturingIdentifier #windowRef
| '('name=errorCapturingIdentifier')' #windowRef
| '('
( CLUSTER BY partition+=expression (',' partition+=expression)*
| ((PARTITION | DISTRIBUTE) BY partition+=expression (',' partition+=expression)*)?
((ORDER | SORT) BY sortItem (',' sortItem)*)?)
windowFrame?
')' #windowDef
;
windowFrame
: frameType=RANGE start=frameBound
| frameType=ROWS start=frameBound
| frameType=RANGE BETWEEN start=frameBound AND end=frameBound
| frameType=ROWS BETWEEN start=frameBound AND end=frameBound
;
frameBound
: UNBOUNDED boundType=(PRECEDING | FOLLOWING)
| boundType=CURRENT ROW
| expression boundType=(PRECEDING | FOLLOWING)
;
qualifiedNameList
: qualifiedName (',' qualifiedName)*
;
functionName
: qualifiedName
| FILTER
| LEFT
| RIGHT
;
qualifiedName
: identifier ('.' identifier)*
;
// this rule is used for explicitly capturing wrong identifiers such as test-table, which should actually be `test-table`
// replace identifier with errorCapturingIdentifier where the immediate follow symbol is not an expression, otherwise
// valid expressions such as "a-b" can be recognized as an identifier
errorCapturingIdentifier
: identifier errorCapturingIdentifierExtra
;
// extra left-factoring grammar
errorCapturingIdentifierExtra
: (MINUS identifier)+ #errorIdent
| #realIdent
;
identifier
: strictIdentifier
| {not self.SQL_standard_keyword_behavior}? strictNonReserved
;
strictIdentifier
: IDENTIFIER #unquotedIdentifier
| quotedIdentifier #quotedIdentifierAlternative
| {self.SQL_standard_keyword_behavior}? ansiNonReserved #unquotedIdentifier
| {not self.SQL_standard_keyword_behavior}? nonReserved #unquotedIdentifier
;
quotedIdentifier
: BACKQUOTED_IDENTIFIER
;
number
: {not self.legacy_exponent_literal_as_decimal_enabled}? MINUS? EXPONENT_VALUE #exponentLiteral
| {not self.legacy_exponent_literal_as_decimal_enabled}? MINUS? DECIMAL_VALUE #decimalLiteral
| {self.legacy_exponent_literal_as_decimal_enabled}? MINUS? (EXPONENT_VALUE | DECIMAL_VALUE) #legacyDecimalLiteral
| MINUS? INTEGER_VALUE #integerLiteral
| MINUS? BIGINT_LITERAL #bigIntLiteral
| MINUS? SMALLINT_LITERAL #smallIntLiteral
| MINUS? TINYINT_LITERAL #tinyIntLiteral
| MINUS? DOUBLE_LITERAL #doubleLiteral
| MINUS? BIGDECIMAL_LITERAL #bigDecimalLiteral
;
alterColumnAction