Package org.apache.drill.exec.expr.fn.impl

Class CollectToListVarcharAggFunction

java.lang.Object
org.apache.drill.exec.expr.fn.impl.CollectToListVarcharAggFunction
All Implemented Interfaces:
DrillAggFunc, DrillFunc
public class CollectToListVarcharAggFunction extends Object implements DrillAggFunc
Aggregate function which collects incoming VarChar column values into the list.

  • Constructor Details

    • CollectToListVarcharAggFunction

      public CollectToListVarcharAggFunction()

  • Method Details

    • setup

      public void setup()
      Description copied from interface: DrillAggFunc
      Initialization for the beginning of the aggregation.
      Specified by:
      setup in interface DrillAggFunc

    • add

      public void add()
      Specified by:
      add in interface DrillAggFunc

    • output

      public void output()
      Specified by:
      output in interface DrillAggFunc

    • reset

      public void reset()
      Specified by:
      reset in interface DrillAggFunc