Package org.apache.flink.table.planner.functions.sql

Class SqlListAggFunction

java.lang.Object
org.apache.calcite.sql.SqlOperator
org.apache.calcite.sql.SqlFunction
org.apache.calcite.sql.SqlAggFunction
org.apache.flink.table.planner.functions.sql.SqlListAggFunction
All Implemented Interfaces:
org.apache.calcite.plan.Context, org.apache.calcite.schema.Wrapper
public class SqlListAggFunction extends org.apache.calcite.sql.SqlAggFunction
LISTAGG aggregate function returns the concatenation of a list of values that are input to the function.

NOTE: The difference between this and SqlStdOperatorTable.LISTAGG is that: (1). constraint the second parameter must to be a character literal. (2). not require over clause to use this aggregate function.

  • Field Summary

    Fields inherited from class org.apache.calcite.sql.SqlOperator

    kind, MDX_PRECEDENCE, NL

  • Constructor Summary

    Constructors
    Constructor
    Description
    SqlListAggFunction()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    List<org.apache.calcite.rel.type.RelDataType>
    getParameterTypes(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)
     
    org.apache.calcite.rel.type.RelDataType
    getReturnType(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)
     

    Methods inherited from class org.apache.calcite.sql.SqlAggFunction

    allowsFilter, allowsNullTreatment, getDistinctOptionality, getRollup, isAggregator, isPercentile, isQuantifierAllowed, requiresGroupOrder, requiresOrder, requiresOver, unwrap, validateCall

    Methods inherited from class org.apache.calcite.sql.SqlFunction

    deriveType, getFunctionType, getNameAsId, getParamNames, getParamTypes, getSqlIdentifier, getSyntax, unparse, validateQuantifier

    Methods inherited from class org.apache.calcite.sql.SqlOperator

    acceptCall, acceptCall, adjustType, allowsFraming, argumentMustBeScalar, checkOperandCount, checkOperandTypes, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, createCall, createCall, createCall, createCall, deriveOperandType, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getMonotonicity, getName, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, getStrongPolicyInference, hashCode, inferReturnType, inferReturnType, isDeterministic, isDynamicFunction, isGroup, isGroupAuxiliary, isName, isSymmetrical, leftPrec, not, preValidateCall, requiresDecimalExpansion, reverse, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateOperands, validRexOperands

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

    Methods inherited from interface org.apache.calcite.schema.Wrapper

    maybeUnwrap, unwrapOrThrow

  • Constructor Details

    • SqlListAggFunction

      public SqlListAggFunction()

  • Method Details

    • getParameterTypes

      public List<org.apache.calcite.rel.type.RelDataType> getParameterTypes(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)
      Overrides:
      getParameterTypes in class org.apache.calcite.sql.SqlAggFunction

    • getReturnType

      public org.apache.calcite.rel.type.RelDataType getReturnType(org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)
      Overrides:
      getReturnType in class org.apache.calcite.sql.SqlAggFunction