Is there a way to simulate GROUP BY WITH CUBE in MySql?

问题

MySql supports GROUP BY WITH ROLLUP which will return aggregates for the last x of the n columns in the group by but does not support GROUP BY WITH CUBE to take all combinations of the n columns and take aggregates.

I can simulate this by doing unions of GROUP BY WITH ROLLUP queries, but MySql is materializing my subquery multiple times. I am using a group by on a large subquery, so this is suboptimal. Is there a way to solve this without temporary tables?

回答1:

Short answer: No.

Long answer: You may install an open source data warehouse with GROUP BY WITH CUBE support which is using Mysql as a storage engine, such as Pentaho.

来源：https://stackoverflow.com/questions/7085236/is-there-a-way-to-simulate-group-by-with-cube-in-mysql