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public interface AggregationResultFuture
Interface for use by aggregate expression nodes representing aggregate functions such as 'sum' or 'avg' to use to obtain the current value for the function at time of expression evaluation.
Method Summary | |
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Object |
getValue(int column)
Returns current aggregation state, for use by expression node representing an aggregation function. |
Method Detail |
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Object getValue(int column)
column
- is assigned to the aggregation expression node and passed as an column (index) into a row
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