org.axiondb.functions
public class CountFunction extends BaseAggregateFunction implements AggregateFunction, FunctionFactory
COUNT
: an aggregate function returning the number of rows.
Version: $Revision: 1.9 $ $Date: 2005/04/24 21:33:11 $
Constructor Summary | |
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CountFunction() |
Method Summary | |
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Object | evaluate(RowDecoratorIterator rows) |
DataType | getDataType() |
ConcreteFunction | makeNewInstance() |