On 11/5/21 22:15, Daniel Gustafsson wrote:
... 1651: GROUP BY optimization =========================== This is IMO a desired optimization, and after all the heavy lifting by Tomas the patch seems to be in pretty good shape.
I agree it's desirable. To move the patch forward, I need some feedback on the costing questions, mentioned in my last review, and the overall approach to planning (considering multiple group by variants).
regards -- Tomas Vondra EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
