On Tue, Dec 5, 2017 at 2:49 AM, Thomas Munro <thomas.mu...@enterprisedb.com> wrote: > As for how to aggregate the information, isn't it reasonable to show > data from the last loop on the basis that it's representative? > Summing wouldn't make too much sense, because you didn't use that much > memory all at once.
Sorts can be rescanned even without parallel query, so I guess we should try to make the parallel case kinda like the non-parallel case. If I'm not wrong, that will just use the stats from the most recent execution (i.e. the last loop) -- see show_sort_info() in explain.c. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
