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java.lang.Objectorg.apache.derby.impl.sql.compile.CountAggregateDefinition
Defintion for the COUNT()/COUNT(*) aggregates.
Constructor Summary | |
CountAggregateDefinition()
Niladic constructor. |
Method Summary | |
TypeDescriptor |
getAggregator(TypeDescriptor inputType,
java.lang.StringBuffer aggregatorClass)
Determines the result datatype. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public CountAggregateDefinition()
Method Detail |
public final TypeDescriptor getAggregator(TypeDescriptor inputType, java.lang.StringBuffer aggregatorClass)
getAggregator
in interface AggregateDefinition
inputType
- the input type descriptoraggregatorClass
- output parameter, filled in
with the class name that implements com.ibm.db2j.aggregates.Aggregator
TypeDescriptor
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