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Oracle® OLAP DML Reference
10g Release 2 (10.2)

Part Number B14346-02
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Creating Custom Aggregates

The definitions for most aggregations persist from one session to another. However, you might need to create session-only aggregates at runtime for forecasting or what-if analysis, or just because you want to view the data in an unforeseen way. Adding session-only aggregates is sometimes called creating custom aggregates. You can create non-persistent aggregated data without permanently changing the specification for the aggregation in the following ways: