Sanyo Moura <sanyo.moura@xxxxxxxxx> writes: > And below are the times generated by EXPLAIN ANALYZE: > 10.5 > Planning time: 126.080 ms > Execution time: 2.306 ms > 11.0 > Planning Time: 7.238 ms > Planning Time: 2.638 ms > 11.5 (I assume you mean 11.1 here) > Planning Time: 15138.533 ms > Execution Time: 2.310 ms There were no changes between 11.0 and 11.1 that look like they'd affect planning time. Nor does it seem particularly credible that planning time would have dropped by a factor of 15 between 10.x and 11.x, especially not given that the resulting plan didn't change. I think you've got some external factor causing long planning times --- maybe something taking an exclusive lock on one of the tables, or on pg_statistic? regards, tom lane
