Package io.prestosql.operator.aggregation

Class CountColumn

java.lang.Object

io.prestosql.metadata.SqlAggregationFunction

io.prestosql.operator.aggregation.CountColumn

All Implemented Interfaces:

SqlFunction

public class CountColumn
extends SqlAggregationFunction

Field Summary

Fields

Modifier and Type	Field	Description
static CountColumn	COUNT_COLUMN

Constructor Summary

Constructors

Constructor	Description
CountColumn()

Method Summary

Modifier and Type	Method	Description
static void	combine(LongState state, LongState otherState)
List<TypeSignature>	getIntermediateTypes(FunctionBinding functionBinding)
static void	input(LongState state, Block block, int index)
static void	output(LongState state, BlockBuilder out)
static void	removeInput(LongState state, Block block, int index)
InternalAggregationFunction	specialize(FunctionBinding functionBinding)

Methods inherited from class io.prestosql.metadata.SqlAggregationFunction

createFunctionByAnnotations, createFunctionsByAnnotations, getAggregationMetadata, getFunctionMetadata, specialize

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.prestosql.metadata.SqlFunction

getFunctionDependencies, getFunctionDependencies

Field Detail

COUNT_COLUMN

public static final CountColumn COUNT_COLUMN

Constructor Detail

CountColumn

public CountColumn()

Method Detail

getIntermediateTypes

public List<TypeSignature> getIntermediateTypes(FunctionBinding functionBinding)

Overrides:

getIntermediateTypes in class SqlAggregationFunction

specialize

public InternalAggregationFunction specialize(FunctionBinding functionBinding)

Overrides:

specialize in class SqlAggregationFunction

input

public static void input(LongState state,
                         Block block,
                         int index)

removeInput

public static void removeInput(LongState state,
                               Block block,
                               int index)

combine

public static void combine(LongState state,
                           LongState otherState)

output

public static void output(LongState state,
                          BlockBuilder out)