Alexander Okulovich <aokulovich@xxxxxxxxxxxxx> writes: > I've attempted to reproduce this on my PC in Docker from the stage > database dump, but no luck. The first query execution on Postgres 15 > behaves like on the real stage, but subsequent ones use the index. Can you force it in either direction with "set enable_seqscan = off" (resp. "set enable_indexscan = off")? If so, how do the estimated costs compare for the two plan shapes? > Also, > they execute much faster. Looks like the hardware and(or) the data > structure on disk matters. Maybe your prod installation has a bloated index, and that's driving up the estimated cost enough to steer the planner away from it. regards, tom lane
