Top Description Fields Constructors Methods
org.h2.expression.aggregate

pack-priv final Class AggregateDataCovar

extends AggregateDataBinarySet
Class Inheritance
Imports
org.h2.engine.SessionLocal, org.h2.message.DbException, org.h2.value.Value, .ValueDouble, .ValueNull
Data stored while calculating a COVAR_POP, COVAR_SAMP, or REGR_SXY aggregate.

Field Summary

Modifier and TypeField and Description
private final AggregateType
aggregateType

private long
count

private double
sumX

private double
sumY

private double
sumYX

Constructor Summary

AccessConstructor and Description
pack-priv
AggregateDataCovar(AggregateType
the type of the aggregate operation
aggregateType)

Method Summary

Modifier and TypeMethod and Description
pack-priv void
add(SessionLocal session, Value yValue, Value xValue)

Implements abstract org.h2.expression.aggregate.AggregateDataBinarySet.add.

pack-priv Value
getValue(SessionLocal
the session
session)

Implements abstract org.h2.expression.aggregate.AggregateData.getValue.

Get the aggregate result.

Inherited from org.h2.expression.aggregate.AggregateDataBinarySet:
add

Field Detail

aggregateTypeback to summary
private final AggregateType aggregateType
countback to summary
private long count
sumXback to summary
private double sumX
sumYback to summary
private double sumY
sumYXback to summary
private double sumYX

Constructor Detail

AggregateDataCovarback to summary
pack-priv AggregateDataCovar(AggregateType aggregateType)
Parameters
aggregateType:AggregateType

the type of the aggregate operation

Method Detail

addback to summary
pack-priv void add(SessionLocal session, Value yValue, Value xValue)

Implements abstract org.h2.expression.aggregate.AggregateDataBinarySet.add.

Annotations
@Override
getValueback to summary
pack-priv Value getValue(SessionLocal session)

Implements abstract org.h2.expression.aggregate.AggregateData.getValue.

Doc from org.h2.expression.aggregate.AggregateData.getValue.

Get the aggregate result.

Parameters
session:SessionLocal

the session

Returns:Value

the value

Annotations
@Override