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 | |
|---|---|
| CountFunction() | |
| Method Summary | |
|---|---|
| Object | evaluate(RowDecoratorIterator rows) |
| DataType | getDataType() |
| ConcreteFunction | makeNewInstance() |