org.apache.drill.exec.expr

Interface DrillAggFunc

All Superinterfaces:

DrillFunc

All Known Implementing Classes:

AggregateErrorFunctions.BitAggregateErrorFunctions, AggregateErrorFunctions.NullableBitAggregateErrorFunctions, AggregateErrorFunctions.NullableVarCharAggregateErrorFunctions, AggregateErrorFunctions.VarCharAggregateErrorFunctions, BooleanAggrFunctions.BitBooleanAnd, BooleanAggrFunctions.BitBooleanOr, BooleanAggrFunctions.NullableBitBooleanAnd, BooleanAggrFunctions.NullableBitBooleanOr, CollectListMapsAggFunction, CollectToListVarcharAggFunction, CountArgumentsAggFunctions.CountBigInt, CountArgumentsAggFunctions.CountMapHolder, CountArgumentsAggFunctions.CountNullableBigInt, SchemaFunctions.MergeNullableSchemaFunction, SchemaFunctions.MergeSchemaFunction, SchemaFunctions.SchemaFunction, StatisticsAggrFunctions.BigIntAvgWidthFunction, StatisticsAggrFunctions.BigIntCntDupsFunction, StatisticsAggrFunctions.BigIntHLLFunction, StatisticsAggrFunctions.BigIntSumWidthFunction, StatisticsAggrFunctions.BitAvgWidthFunction, StatisticsAggrFunctions.BitCntDupsFunction, StatisticsAggrFunctions.BitHLLFunction, StatisticsAggrFunctions.BitSumWidthFunction, StatisticsAggrFunctions.DateAvgWidthFunction, StatisticsAggrFunctions.DateCntDupsFunction, StatisticsAggrFunctions.DateHLLFunction, StatisticsAggrFunctions.DateSumWidthFunction, StatisticsAggrFunctions.Decimal18AvgWidthFunction, StatisticsAggrFunctions.Decimal18CntDupsFunction, StatisticsAggrFunctions.Decimal18HLLFunction, StatisticsAggrFunctions.Decimal18SumWidthFunction, StatisticsAggrFunctions.Decimal28DenseAvgWidthFunction, StatisticsAggrFunctions.Decimal28DenseSumWidthFunction, StatisticsAggrFunctions.Decimal28SparseAvgWidthFunction, StatisticsAggrFunctions.Decimal28SparseSumWidthFunction, StatisticsAggrFunctions.Decimal38DenseAvgWidthFunction, StatisticsAggrFunctions.Decimal38DenseSumWidthFunction, StatisticsAggrFunctions.Decimal38SparseAvgWidthFunction, StatisticsAggrFunctions.Decimal38SparseSumWidthFunction, StatisticsAggrFunctions.Decimal9AvgWidthFunction, StatisticsAggrFunctions.Decimal9CntDupsFunction, StatisticsAggrFunctions.Decimal9HLLFunction, StatisticsAggrFunctions.Decimal9SumWidthFunction, StatisticsAggrFunctions.Float4AvgWidthFunction, StatisticsAggrFunctions.Float4CntDupsFunction, StatisticsAggrFunctions.Float4HLLFunction, StatisticsAggrFunctions.Float4SumWidthFunction, StatisticsAggrFunctions.Float8AvgWidthFunction, StatisticsAggrFunctions.Float8CntDupsFunction, StatisticsAggrFunctions.Float8HLLFunction, StatisticsAggrFunctions.Float8SumWidthFunction, StatisticsAggrFunctions.HllFieldReader, StatisticsAggrFunctions.HllMerge, StatisticsAggrFunctions.IntAvgWidthFunction, StatisticsAggrFunctions.IntCntDupsFunction, StatisticsAggrFunctions.IntervalAvgWidthFunction, StatisticsAggrFunctions.IntervalCntDupsFunction, StatisticsAggrFunctions.IntervalHLLFunction, StatisticsAggrFunctions.IntervalSumWidthFunction, StatisticsAggrFunctions.IntHLLFunction, StatisticsAggrFunctions.IntSumWidthFunction, StatisticsAggrFunctions.NonNullRowCount, StatisticsAggrFunctions.NullableBigIntAvgWidthFunction, StatisticsAggrFunctions.NullableBigIntCntDupsFunction, StatisticsAggrFunctions.NullableBigIntHLLFunction, StatisticsAggrFunctions.NullableBigIntSumWidthFunction, StatisticsAggrFunctions.NullableBitAvgWidthFunction, StatisticsAggrFunctions.NullableBitCntDupsFunction, StatisticsAggrFunctions.NullableBitHLLFunction, StatisticsAggrFunctions.NullableBitSumWidthFunction, StatisticsAggrFunctions.NullableDateAvgWidthFunction, StatisticsAggrFunctions.NullableDateCntDupsFunction, StatisticsAggrFunctions.NullableDateHLLFunction, StatisticsAggrFunctions.NullableDateSumWidthFunction, StatisticsAggrFunctions.NullableDecimal18AvgWidthFunction, StatisticsAggrFunctions.NullableDecimal18CntDupsFunction, StatisticsAggrFunctions.NullableDecimal18HLLFunction, StatisticsAggrFunctions.NullableDecimal18SumWidthFunction, StatisticsAggrFunctions.NullableDecimal28DenseAvgWidthFunction, StatisticsAggrFunctions.NullableDecimal28DenseSumWidthFunction, StatisticsAggrFunctions.NullableDecimal28SparseAvgWidthFunction, StatisticsAggrFunctions.NullableDecimal28SparseSumWidthFunction, StatisticsAggrFunctions.NullableDecimal38DenseAvgWidthFunction, StatisticsAggrFunctions.NullableDecimal38DenseSumWidthFunction, StatisticsAggrFunctions.NullableDecimal38SparseAvgWidthFunction, StatisticsAggrFunctions.NullableDecimal38SparseSumWidthFunction, StatisticsAggrFunctions.NullableDecimal9AvgWidthFunction, StatisticsAggrFunctions.NullableDecimal9CntDupsFunction, StatisticsAggrFunctions.NullableDecimal9HLLFunction, StatisticsAggrFunctions.NullableDecimal9SumWidthFunction, StatisticsAggrFunctions.NullableFloat4AvgWidthFunction, StatisticsAggrFunctions.NullableFloat4CntDupsFunction, StatisticsAggrFunctions.NullableFloat4HLLFunction, StatisticsAggrFunctions.NullableFloat4SumWidthFunction, StatisticsAggrFunctions.NullableFloat8AvgWidthFunction, StatisticsAggrFunctions.NullableFloat8CntDupsFunction, StatisticsAggrFunctions.NullableFloat8HLLFunction, StatisticsAggrFunctions.NullableFloat8SumWidthFunction, StatisticsAggrFunctions.NullableIntAvgWidthFunction, StatisticsAggrFunctions.NullableIntCntDupsFunction, StatisticsAggrFunctions.NullableIntervalAvgWidthFunction, StatisticsAggrFunctions.NullableIntervalCntDupsFunction, StatisticsAggrFunctions.NullableIntervalHLLFunction, StatisticsAggrFunctions.NullableIntervalSumWidthFunction, StatisticsAggrFunctions.NullableIntHLLFunction, StatisticsAggrFunctions.NullableIntSumWidthFunction, StatisticsAggrFunctions.NullableTimeAvgWidthFunction, StatisticsAggrFunctions.NullableTimeCntDupsFunction, StatisticsAggrFunctions.NullableTimeHLLFunction, StatisticsAggrFunctions.NullableTimeStampAvgWidthFunction, StatisticsAggrFunctions.NullableTimeStampCntDupsFunction, StatisticsAggrFunctions.NullableTimeStampHLLFunction, StatisticsAggrFunctions.NullableTimeStampSumWidthFunction, StatisticsAggrFunctions.NullableTimeSumWidthFunction, StatisticsAggrFunctions.NullableVar16CharAvgWidthFunction, StatisticsAggrFunctions.NullableVar16CharCntDupsFunction, StatisticsAggrFunctions.NullableVar16CharHLLFunction, StatisticsAggrFunctions.NullableVar16CharSumWidthFunction, StatisticsAggrFunctions.NullableVarBinaryAvgWidthFunction, StatisticsAggrFunctions.NullableVarBinaryCntDupsFunction, StatisticsAggrFunctions.NullableVarBinaryHLLFunction, StatisticsAggrFunctions.NullableVarBinarySumWidthFunction, StatisticsAggrFunctions.NullableVarCharAvgWidthFunction, StatisticsAggrFunctions.NullableVarCharCntDupsFunction, StatisticsAggrFunctions.NullableVarCharHLLFunction, StatisticsAggrFunctions.NullableVarCharSumWidthFunction, StatisticsAggrFunctions.RowCount, StatisticsAggrFunctions.TimeAvgWidthFunction, StatisticsAggrFunctions.TimeCntDupsFunction, StatisticsAggrFunctions.TimeHLLFunction, StatisticsAggrFunctions.TimeStampAvgWidthFunction, StatisticsAggrFunctions.TimeStampCntDupsFunction, StatisticsAggrFunctions.TimeStampHLLFunction, StatisticsAggrFunctions.TimeStampSumWidthFunction, StatisticsAggrFunctions.TimeSumWidthFunction, StatisticsAggrFunctions.Var16CharAvgWidthFunction, StatisticsAggrFunctions.Var16CharCntDupsFunction, StatisticsAggrFunctions.Var16CharHLLFunction, StatisticsAggrFunctions.Var16CharSumWidthFunction, StatisticsAggrFunctions.VarBinaryAvgWidthFunction, StatisticsAggrFunctions.VarBinaryCntDupsFunction, StatisticsAggrFunctions.VarBinaryHLLFunction, StatisticsAggrFunctions.VarBinarySumWidthFunction, StatisticsAggrFunctions.VarCharAvgWidthFunction, StatisticsAggrFunctions.VarCharCntDupsFunction, StatisticsAggrFunctions.VarCharHLLFunction, StatisticsAggrFunctions.VarCharSumWidthFunction, STUnionAggregate, TDigestFunctions.BigIntTDigestFunction, TDigestFunctions.BitTDigestFunction, TDigestFunctions.DateTDigestFunction, TDigestFunctions.Float4TDigestFunction, TDigestFunctions.Float8TDigestFunction, TDigestFunctions.IntTDigestFunction, TDigestFunctions.NullableBigIntTDigestFunction, TDigestFunctions.NullableBitTDigestFunction, TDigestFunctions.NullableDateTDigestFunction, TDigestFunctions.NullableFloat4TDigestFunction, TDigestFunctions.NullableFloat8TDigestFunction, TDigestFunctions.NullableIntTDigestFunction, TDigestFunctions.NullableTimeStampTDigestFunction, TDigestFunctions.NullableTimeTDigestFunction, TDigestFunctions.NullableVarBinaryTDigestFunction, TDigestFunctions.NullableVarCharTDigestFunction, TDigestFunctions.TDigestMergeFunction, TDigestFunctions.TimeStampTDigestFunction, TDigestFunctions.TimeTDigestFunction, TDigestFunctions.VarBinaryTDigestFunction, TDigestFunctions.VarCharTDigestFunction

public interface DrillAggFunc
extends DrillFunc

Aggregate function interface.

Method Summary

Modifier and Type	Method and Description
void	add()
void	output()
void	reset()
void	setup() Initialization for the beginning of the aggregation.

Method Detail

setup

void setup()

Initialization for the beginning of the aggregation.

add

void add()

output

void output()

reset

void reset()