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OpenSearchPPLParser.g4
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1774 lines (1522 loc) · 35.3 KB
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/*
* Copyright OpenSearch Contributors
* SPDX-License-Identifier: Apache-2.0
*/
parser grammar OpenSearchPPLParser;
options { tokenVocab = OpenSearchPPLLexer; }
root
: pplStatement? EOF
;
// statement
pplStatement
: explainStatement
| queryStatement
;
subPipeline
: PIPE? commands (PIPE commands?)*
;
queryStatement
: (PIPE)? pplCommands (PIPE commands?)*
;
explainStatement
: EXPLAIN (explainMode)? queryStatement
;
explainMode
: SIMPLE
| STANDARD
| COST
| EXTENDED
;
subSearch
: searchCommand (PIPE commands?)*
;
// commands
pplCommands
: describeCommand
| showDataSourcesCommand
| searchCommand
| multisearchCommand
| graphLookupCommand
| unionCommand
;
commands
: whereCommand
| fieldsCommand
| tableCommand
| joinCommand
| renameCommand
| statsCommand
| eventstatsCommand
| streamstatsCommand
| dedupCommand
| sortCommand
| evalCommand
| headCommand
| binCommand
| rareTopCommand
| grokCommand
| parseCommand
| spathCommand
| patternsCommand
| lookupCommand
| kmeansCommand
| adCommand
| mlCommand
| fillnullCommand
| convertCommand
| trendlineCommand
| appendcolCommand
| addtotalsCommand
| addcoltotalsCommand
| appendCommand
| expandCommand
| mvexpandCommand
| flattenCommand
| reverseCommand
| regexCommand
| chartCommand
| timechartCommand
| transposeCommand
| rexCommand
| appendPipeCommand
| replaceCommand
| mvcombineCommand
| fieldformatCommand
| nomvCommand
| graphLookupCommand
| unionCommand
;
commandName
: SEARCH
| DESCRIBE
| SHOW
| WHERE
| FIELDS
| TABLE
| JOIN
| RENAME
| STATS
| EVENTSTATS
| STREAMSTATS
| DEDUP
| SORT
| EVAL
| FIELDFORMAT
| HEAD
| BIN
| TOP
| RARE
| GROK
| PARSE
| PATTERNS
| LOOKUP
| KMEANS
| AD
| ML
| FILLNULL
| CONVERT
| EXPAND
| MVEXPAND
| FLATTEN
| TRENDLINE
| TIMECHART
| EXPLAIN
| REVERSE
| REGEX
| ADDTOTALS
| ADDCOLTOTALS
| APPEND
| MULTISEARCH
| UNION
| REX
| APPENDPIPE
| REPLACE
| MVCOMBINE
| NOMV
| TRANSPOSE
| GRAPHLOOKUP
;
searchCommand
: (SEARCH)? (searchExpression)* fromClause (searchExpression)* # searchFrom
;
searchExpression
: timeModifier # timeModifierExpression
| LT_PRTHS searchExpression RT_PRTHS # groupedExpression
| NOT searchExpression # notExpression
| searchExpression OR searchExpression # orExpression
| searchExpression AND searchExpression # andExpression
| searchTerm # termExpression
;
searchTerm
: searchFieldComparison # searchComparisonTerm
| searchFieldInList # searchInListTerm
| searchLiteral # searchLiteralTerm
;
// Unified search literal for both free text and field comparisons
searchLiteral
: numericLiteral
| booleanLiteral
| ID
| NUMERIC_ID
| stringLiteral
| searchableKeyWord
;
searchFieldComparison
: fieldExpression searchComparisonOperator searchLiteral # searchFieldCompare
;
searchFieldInList
: fieldExpression IN LT_PRTHS searchLiteralList RT_PRTHS # searchFieldInValues
;
searchLiteralList
: searchLiteral (COMMA searchLiteral)* # searchLiterals
;
searchComparisonOperator
: EQUAL # equals
| NOT_EQUAL # notEquals
| LESS # lessThan
| NOT_GREATER # lessOrEqual
| GREATER # greaterThan
| NOT_LESS # greaterOrEqual
;
describeCommand
: DESCRIBE tableSourceClause
;
showDataSourcesCommand
: SHOW DATASOURCES
;
whereCommand
: WHERE logicalExpression
;
fieldsCommand
: FIELDS fieldsCommandBody
;
// Table command - alias for fields command
tableCommand
: TABLE fieldsCommandBody
;
fieldsCommandBody
: (PLUS | MINUS)? wcFieldList
;
// Wildcard field list supporting both comma-separated and space-separated fields
wcFieldList
: selectFieldExpression (COMMA? selectFieldExpression)*
;
renameCommand
: RENAME renameClause (COMMA? renameClause)*
;
replaceCommand
: REPLACE replacePair (COMMA replacePair)* IN fieldList
;
replacePair
: pattern=stringLiteral WITH replacement=stringLiteral
;
statsCommand
: STATS statsArgs statsAggTerm (COMMA statsAggTerm)* (statsByClause)? (dedupSplitArg)?
;
appendPipeCommand
: APPENDPIPE LT_SQR_PRTHS subPipeline RT_SQR_PRTHS
;
statsArgs
: (partitionsArg | allnumArg | delimArg | bucketNullableArg)*
;
partitionsArg
: PARTITIONS EQUAL partitions = integerLiteral
;
allnumArg
: ALLNUM EQUAL allnum = booleanLiteral
;
delimArg
: DELIM EQUAL delim = stringLiteral
;
bucketNullableArg
: BUCKET_NULLABLE EQUAL bucket_nullable = booleanLiteral
;
dedupSplitArg
: DEDUP_SPLITVALUES EQUAL dedupsplit = booleanLiteral
;
eventstatsCommand
: EVENTSTATS (bucketNullableArg)? eventstatsAggTerm (COMMA eventstatsAggTerm)* (statsByClause)?
;
streamstatsCommand
: STREAMSTATS streamstatsArgs streamstatsAggTerm (COMMA streamstatsAggTerm)* (statsByClause)?
;
streamstatsArgs
: (currentArg | windowArg | globalArg | resetBeforeArg | resetAfterArg | bucketNullableArg)*
;
currentArg
: CURRENT EQUAL current = booleanLiteral
;
windowArg
: WINDOW EQUAL window = integerLiteral
;
globalArg
: GLOBAL EQUAL global = booleanLiteral
;
resetBeforeArg
: RESET_BEFORE EQUAL logicalExpression
;
resetAfterArg
: RESET_AFTER EQUAL logicalExpression
;
dedupCommand
: DEDUP (number = integerLiteral)? fieldList (KEEPEMPTY EQUAL keepempty = booleanLiteral)? (CONSECUTIVE EQUAL consecutive = booleanLiteral)?
;
sortCommand
: SORT (count = integerLiteral)? sortbyClause
;
reverseCommand
: REVERSE
;
chartCommand
: CHART chartOptions* statsAggTerm (OVER rowSplit)? (BY columnSplit)? chartOptions*
| CHART chartOptions* statsAggTerm BY rowSplit (COMMA)? columnSplit chartOptions*
;
chartOptions
: LIMIT EQUAL integerLiteral
| LIMIT EQUAL (TOP_K | BOTTOM_K)
| USEOTHER EQUAL booleanLiteral
| OTHERSTR EQUAL stringLiteral
| USENULL EQUAL booleanLiteral
| NULLSTR EQUAL stringLiteral
;
rowSplit
: fieldExpression binOption*
;
columnSplit
: fieldExpression binOption*
;
timechartCommand
: TIMECHART timechartParameter* statsAggTerm (BY fieldExpression)? timechartParameter*
;
transposeCommand
: TRANSPOSE transposeParameter*
;
transposeParameter
: (number = integerLiteral)
| (COLUMN_NAME EQUAL stringLiteral)
;
timechartParameter
: LIMIT EQUAL integerLiteral
| SPAN EQUAL spanLiteral
| USEOTHER EQUAL (booleanLiteral | ident)
| TIMEFIELD EQUAL (ident | stringLiteral)
;
spanLiteral
: SPANLENGTH
| DECIMAL_SPANLENGTH
| DOUBLE_LITERAL // 1.5d can also represent decimal span length
| INTEGER_LITERAL
| DECIMAL_LITERAL
;
evalCommand
: EVAL evalClause (COMMA evalClause)*
;
fieldformatCommand
: FIELDFORMAT fieldFormatEvalClause (COMMA fieldFormatEvalClause)*
;
headCommand
: HEAD (number = integerLiteral)? (FROM from = integerLiteral)?
;
binCommand
: BIN fieldExpression binOption* (AS alias = qualifiedName)?
;
binOption
: SPAN EQUAL span = binSpanValue
| BINS EQUAL bins = integerLiteral
| MINSPAN EQUAL minspan = spanLiteral
| ALIGNTIME EQUAL aligntime = aligntimeValue
| START EQUAL start = numericLiteral
| END EQUAL end = numericLiteral
;
aligntimeValue
: EARLIEST
| LATEST
| literalValue
;
binSpanValue
: spanLiteral # numericSpanValue
| logSpanValue # logBasedSpanValue
;
logSpanValue
: LOG_WITH_BASE # logWithBaseSpan
;
rareTopCommand
: (TOP | RARE) (number = integerLiteral)? rareTopOption* fieldList (byClause)?
;
rareTopOption
: COUNTFIELD EQUAL countField = stringLiteral
| SHOWCOUNT EQUAL showCount = booleanLiteral
| USENULL EQUAL useNull = booleanLiteral
;
grokCommand
: GROK (source_field = expression) (pattern = stringLiteral)
;
parseCommand
: PARSE (source_field = expression) (pattern = stringLiteral)
;
spathCommand
: SPATH spathParameter*
;
spathParameter
: (INPUT EQUAL input = expression)
| (OUTPUT EQUAL output = expression)
| ((PATH EQUAL)? path = indexablePath)
;
indexablePath
: pathElement (DOT pathElement)*
| stringLiteral
;
pathElement
: ident pathArrayAccess?
;
pathArrayAccess
: LT_CURLY (INTEGER_LITERAL)? RT_CURLY
;
regexCommand
: REGEX regexExpr
;
regexExpr
: field=qualifiedName operator=(EQUAL | NOT_EQUAL) pattern=stringLiteral
;
rexCommand
: REX rexExpr
;
rexExpr
: FIELD EQUAL field=qualifiedName (rexOption)* pattern=stringLiteral (rexOption)*
;
rexOption
: MAX_MATCH EQUAL maxMatch=integerLiteral
| MODE EQUAL (EXTRACT | SED)
| OFFSET_FIELD EQUAL offsetField=qualifiedName
;
patternsMethod
: PUNCT
| REGEX
;
patternsCommand
: PATTERNS (source_field = expression) (statsByClause)? (patternsCommandOption)* (patternsParameter)*
;
patternsCommandOption
: (METHOD EQUAL method = patternMethod)
| (MODE EQUAL pattern_mode = patternMode)
| (MAX_SAMPLE_COUNT EQUAL max_sample_count = integerLiteral)
| (BUFFER_LIMIT EQUAL buffer_limit = integerLiteral)
| (SHOW_NUMBERED_TOKEN EQUAL show_numbered_token = booleanLiteral)
;
patternsParameter
: (PATTERN EQUAL pattern = stringLiteral)
| (NEW_FIELD EQUAL new_field = stringLiteral)
| (VARIABLE_COUNT_THRESHOLD EQUAL variable_count_threshold = integerLiteral)
| (FREQUENCY_THRESHOLD_PERCENTAGE EQUAL frequency_threshold_percentage = decimalLiteral)
;
patternMethod
: SIMPLE_PATTERN
| BRAIN
;
patternMode
: LABEL
| AGGREGATION
;
// lookup
lookupCommand
: LOOKUP tableSource lookupMappingList ((APPEND | REPLACE | OUTPUT) outputCandidateList)?
;
lookupMappingList
: lookupPair (COMMA lookupPair)*
;
outputCandidateList
: lookupPair (COMMA lookupPair)*
;
// The lookup pair will generate a K-V pair.
// The format is Key -> Alias(outputFieldName, inputField), Value -> outputField. For example:
// 1. When lookupPair is "name AS cName", the key will be Alias(cName, Field(name)), the value will be Field(cName)
// 2. When lookupPair is "dept", the key is Alias(dept, Field(dept)), value is Field(dept)
lookupPair
: inputField = fieldExpression (AS outputField = fieldExpression)?
;
fillnullCommand
: FILLNULL fillNullWith # fillNullWithClause
| FILLNULL fillNullUsing # fillNullUsingClause
| FILLNULL VALUE EQUAL replacement = valueExpression fieldList # fillNullValueWithFields
| FILLNULL VALUE EQUAL replacement = valueExpression # fillNullValueAllFields
;
fillNullWith
: WITH replacement = valueExpression (IN fieldList)?
;
fillNullUsing
: USING replacementPair (COMMA replacementPair)*
;
replacementPair
: fieldExpression EQUAL replacement = valueExpression
;
convertCommand
: CONVERT (TIMEFORMAT EQUAL timeFormat=stringLiteral)? convertFunction (COMMA? convertFunction)*
;
convertFunction
: functionName = ident LT_PRTHS fieldExpression RT_PRTHS (AS alias = fieldExpression)?
;
trendlineCommand
: TRENDLINE (SORT sortField)? trendlineClause (trendlineClause)*
;
trendlineClause
: trendlineType LT_PRTHS numberOfDataPoints = integerLiteral COMMA field = fieldExpression RT_PRTHS (AS alias = qualifiedName)?
;
trendlineType
: SMA
| WMA
;
expandCommand
: EXPAND fieldExpression (AS alias = qualifiedName)?
;
mvcombineCommand
: MVCOMBINE fieldExpression (DELIM EQUAL stringLiteral)?
;
nomvCommand
: NOMV fieldExpression
;
mvexpandCommand
: MVEXPAND fieldExpression (LIMIT EQUAL INTEGER_LITERAL)?
;
flattenCommand
: FLATTEN fieldExpression (AS aliases = identifierSeq)?
;
appendcolCommand
: APPENDCOL (OVERRIDE EQUAL override = booleanLiteral)? LT_SQR_PRTHS commands (PIPE commands)* RT_SQR_PRTHS
;
appendCommand
: APPEND LT_SQR_PRTHS searchCommand? (PIPE commands)* RT_SQR_PRTHS
;
multisearchCommand
: MULTISEARCH (LT_SQR_PRTHS subSearch RT_SQR_PRTHS)+
;
unionCommand
: UNION subsearchOptions? unionDataset (COMMA? unionDataset)*
;
subsearchOptions
: (MAXOUT EQUAL maxout=integerLiteral)?
;
unionDataset
: LT_SQR_PRTHS subSearch RT_SQR_PRTHS
| tableSource
;
kmeansCommand
: KMEANS (kmeansParameter)*
;
kmeansParameter
: (CENTROIDS EQUAL centroids = integerLiteral)
| (ITERATIONS EQUAL iterations = integerLiteral)
| (DISTANCE_TYPE EQUAL distance_type = stringLiteral)
;
adCommand
: AD (adParameter)*
;
adParameter
: (NUMBER_OF_TREES EQUAL number_of_trees = integerLiteral)
| (SHINGLE_SIZE EQUAL shingle_size = integerLiteral)
| (SAMPLE_SIZE EQUAL sample_size = integerLiteral)
| (OUTPUT_AFTER EQUAL output_after = integerLiteral)
| (TIME_DECAY EQUAL time_decay = decimalLiteral)
| (ANOMALY_RATE EQUAL anomaly_rate = decimalLiteral)
| (CATEGORY_FIELD EQUAL category_field = stringLiteral)
| (TIME_FIELD EQUAL time_field = stringLiteral)
| (DATE_FORMAT EQUAL date_format = stringLiteral)
| (TIME_ZONE EQUAL time_zone = stringLiteral)
| (TRAINING_DATA_SIZE EQUAL training_data_size = integerLiteral)
| (ANOMALY_SCORE_THRESHOLD EQUAL anomaly_score_threshold = decimalLiteral)
;
mlCommand
: ML (mlArg)*
;
mlArg
: (argName = ident EQUAL argValue = literalValue)
;
addtotalsCommand
: ADDTOTALS (fieldList)? addtotalsOption*
| ADDTOTALS addtotalsOption* (fieldList)?
;
addtotalsOption
: (LABEL EQUAL stringLiteral)
| (LABELFIELD EQUAL stringLiteral)
| (FIELDNAME EQUAL stringLiteral)
| (ROW EQUAL booleanLiteral)
| (COL EQUAL booleanLiteral)
;
addcoltotalsCommand
: ADDCOLTOTALS (fieldList)? addcoltotalsOption*
| ADDCOLTOTALS addcoltotalsOption* (fieldList)?
;
addcoltotalsOption
: (LABEL EQUAL stringLiteral)
| (LABELFIELD EQUAL stringLiteral)
;
graphLookupCommand
: GRAPHLOOKUP lookupTable = tableSourceClause startClause edgeClause graphLookupArgs* AS outputField = fieldExpression
;
startClause
: START EQUAL valueList
| START EQUAL startField = fieldExpression
| START EQUAL startValue = literalValue
;
edgeClause
: edgeClauseToken = EDGE_CLAUSE
;
graphLookupArgs
: (MAX_DEPTH EQUAL integerLiteral)
| (DEPTH_FIELD EQUAL fieldExpression)
| (SUPPORT_ARRAY EQUAL booleanLiteral)
| (BATCH_MODE EQUAL booleanLiteral)
| (USE_PIT EQUAL booleanLiteral)
| (FILTER EQUAL LT_PRTHS logicalExpression RT_PRTHS)
;
// clauses
fromClause
: SOURCE EQUAL tableOrSubqueryClause
| INDEX EQUAL tableOrSubqueryClause
| SOURCE EQUAL tableFunction
| INDEX EQUAL tableFunction
| SOURCE EQUAL dynamicSourceClause
| INDEX EQUAL dynamicSourceClause
;
tableOrSubqueryClause
: LT_SQR_PRTHS subSearch RT_SQR_PRTHS (AS alias = qualifiedName)?
| tableSourceClause
;
tableSourceClause
: tableSource (COMMA tableSource)* (AS alias = qualifiedName)?
;
dynamicSourceClause
: LT_SQR_PRTHS (sourceReference | sourceFilterArg) (COMMA (sourceReference | sourceFilterArg))* RT_SQR_PRTHS
;
sourceReference
: (CLUSTER)? wcQualifiedName
;
sourceFilterArg
: ident EQUAL literalValue
| ident IN LT_PRTHS valueList RT_PRTHS
;
// join
joinCommand
: JOIN (joinOption)* (fieldList)? right = tableOrSubqueryClause
| sqlLikeJoinType? JOIN (joinOption)* sideAlias joinHintList? joinCriteria right = tableOrSubqueryClause
;
sqlLikeJoinType
: INNER
| CROSS
| (LEFT OUTER? | OUTER)
| RIGHT OUTER?
| FULL OUTER?
| LEFT? SEMI
| LEFT? ANTI
;
joinType
: INNER
| CROSS
| OUTER
| LEFT
| RIGHT
| FULL
| SEMI
| ANTI
;
sideAlias
: (LEFT EQUAL leftAlias = qualifiedName)? COMMA? (RIGHT EQUAL rightAlias = qualifiedName)?
;
joinCriteria
: (ON | WHERE) logicalExpression
;
joinHintList
: hintPair (COMMA? hintPair)*
;
hintPair
: leftHintKey = LEFT_HINT DOT ID EQUAL leftHintValue = ident #leftHint
| rightHintKey = RIGHT_HINT DOT ID EQUAL rightHintValue = ident #rightHint
;
joinOption
: OVERWRITE EQUAL booleanLiteral # overwriteOption
| TYPE EQUAL joinType # typeOption
| MAX EQUAL integerLiteral # maxOption
;
renameClause
: orignalField = renameFieldExpression AS renamedField = renameFieldExpression
;
byClause
: BY fieldList
;
statsByClause
: BY fieldList
| BY bySpanClause
| BY bySpanClause COMMA fieldList
| BY fieldList COMMA bySpanClause
;
bySpanClause
: spanClause (AS alias = qualifiedName)?
;
spanClause
: SPAN LT_PRTHS (fieldExpression COMMA)? value = spanLiteral RT_PRTHS
;
sortbyClause
: sortField (COMMA sortField)*
;
evalClause
: fieldExpression EQUAL logicalExpression
;
fieldFormatEvalClause
: fieldExpression EQUAL ffLogicalExpression
;
eventstatsAggTerm
: windowFunction (AS alias = wcFieldExpression)?
;
streamstatsAggTerm
: windowFunction (AS alias = wcFieldExpression)?
;
windowFunction
: windowFunctionName LT_PRTHS functionArgs RT_PRTHS
;
windowFunctionName
: statsFunctionName
| scalarWindowFunctionName
;
scalarWindowFunctionName
: ROW_NUMBER
| RANK
| DENSE_RANK
| PERCENT_RANK
| CUME_DIST
| FIRST
| LAST
| NTH
| NTILE
| DISTINCT_COUNT
| DC
;
// aggregation terms
statsAggTerm
: statsFunction (AS alias = wcFieldExpression)?
;
// aggregation functions
statsFunction
: (COUNT | C) LT_PRTHS evalExpression RT_PRTHS # countEvalFunctionCall
| (COUNT | C) (LT_PRTHS RT_PRTHS)? # countAllFunctionCall
| PERCENTILE_SHORTCUT LT_PRTHS valueExpression RT_PRTHS # percentileShortcutFunctionCall
| (DISTINCT_COUNT | DC | DISTINCT_COUNT_APPROX) LT_PRTHS valueExpression RT_PRTHS # distinctCountFunctionCall
| takeAggFunction # takeAggFunctionCall
| valuesAggFunction # valuesAggFunctionCall
| percentileApproxFunction # percentileApproxFunctionCall
| perFunction # perFunctionCall
| statsFunctionName LT_PRTHS functionArgs RT_PRTHS # statsFunctionCall
;
statsFunctionName
: AVG
| COUNT
| SUM
| MIN
| MAX
| VAR_SAMP
| VAR_POP
| STDDEV_SAMP
| STDDEV_POP
| PERCENTILE
| PERCENTILE_APPROX
| MEDIAN
| LIST
| FIRST
| EARLIEST
| LATEST
| LAST
;
takeAggFunction
: TAKE LT_PRTHS fieldExpression (COMMA size = integerLiteral)? RT_PRTHS
;
valuesAggFunction
: VALUES LT_PRTHS valueExpression RT_PRTHS
;
percentileApproxFunction
: (PERCENTILE | PERCENTILE_APPROX) LT_PRTHS aggField = valueExpression
COMMA percent = numericLiteral (COMMA compression = numericLiteral)? RT_PRTHS
;
perFunction
: funcName=(PER_SECOND | PER_MINUTE | PER_HOUR | PER_DAY) LT_PRTHS functionArg RT_PRTHS
;
numericLiteral
: integerLiteral
| decimalLiteral
| doubleLiteral
| floatLiteral
;
ffLogicalExpression
: stringLiteral DOT logicalExpression # stringDotlogicalExpression
| stringLiteral DOT logicalExpression DOT stringLiteral # stringDotlogicalExpressionDotString
| logicalExpression DOT stringLiteral # logicalExpressionDotString
| logicalExpression # ffStandardLogicalExpression
;
// predicates
logicalExpression
: NOT logicalExpression # logicalNot
| left = logicalExpression AND right = logicalExpression # logicalAnd
| left = logicalExpression XOR right = logicalExpression # logicalXor
| left = logicalExpression OR right = logicalExpression # logicalOr
| expression # logicalExpr
;
expression
: valueExpression # valueExpr
| relevanceExpression # relevanceExpr
| left = expression comparisonOperator right = expression # compareExpr
| expression NOT? IN LT_PRTHS valueList RT_PRTHS # inExpr
| expression NOT? BETWEEN expression AND expression # between
| expression IS nullNotnull # isNullPredicate
;
nullNotnull
: NOT? NULL
;
valueExpression
: left = valueExpression binaryOperator = (STAR | DIVIDE | MODULE) right = valueExpression # binaryArithmetic
| left = valueExpression binaryOperator = (PLUS | MINUS) right = valueExpression # binaryArithmetic
| literalValue # literalValueExpr
| functionCall # functionCallExpr
| lambda # lambdaExpr
| LT_SQR_PRTHS subSearch RT_SQR_PRTHS # scalarSubqueryExpr
| valueExpression NOT? IN LT_SQR_PRTHS subSearch RT_SQR_PRTHS # inSubqueryExpr
| LT_PRTHS valueExpression (COMMA valueExpression)* RT_PRTHS NOT? IN LT_SQR_PRTHS subSearch RT_SQR_PRTHS # inSubqueryExpr
| EXISTS LT_SQR_PRTHS subSearch RT_SQR_PRTHS # existsSubqueryExpr
| fieldExpression # fieldExpr
| LT_PRTHS logicalExpression RT_PRTHS # nestedValueExpr
;
evalExpression
: EVAL LT_PRTHS logicalExpression RT_PRTHS
;
functionCall
: mvmapFunctionCall
| evalFunctionCall
| dataTypeFunctionCall
| positionFunctionCall
| caseFunctionCall
| timestampFunctionCall
| extractFunctionCall
| getFormatFunctionCall
;
mvmapFunctionCall
: MVMAP LT_PRTHS functionArg COMMA functionArg RT_PRTHS
;
positionFunctionCall
: positionFunctionName LT_PRTHS functionArg IN functionArg RT_PRTHS
;
caseFunctionCall
: CASE LT_PRTHS logicalExpression COMMA valueExpression (COMMA logicalExpression COMMA valueExpression)* (ELSE valueExpression)? RT_PRTHS
;
relevanceExpression
: singleFieldRelevanceFunction
| multiFieldRelevanceFunction
;
// Field is a single column
singleFieldRelevanceFunction
: singleFieldRelevanceFunctionName LT_PRTHS field = relevanceField COMMA query = relevanceQuery (COMMA relevanceArg)* RT_PRTHS
;
// Field is a list of columns
multiFieldRelevanceFunction
: multiFieldRelevanceFunctionName LT_PRTHS (LT_SQR_PRTHS field = relevanceFieldAndWeight (COMMA field = relevanceFieldAndWeight)* RT_SQR_PRTHS COMMA)? query = relevanceQuery (COMMA relevanceArg)* RT_PRTHS
;
timeModifier
: (EARLIEST | LATEST) EQUAL timeModifierValue
;
timeModifierValue
: NOW
| NOW LT_PRTHS RT_PRTHS