Re: Help with row estimate problem

2024-07-30 Thread Jon Zeppieri
On Tue, Jul 30, 2024 at 11:34 AM Andrei Lepikhov wrote: > > Thanks for report. I see such cases frequently enough and the key > problem here is data skew, as you already mentioned. Extended statistics > doesn't help here. Also, because we can't estimate specific values > coming from the outer Nest

Re: Help with row estimate problem

2024-07-30 Thread Andrei Lepikhov
On 29/7/2024 22:51, Jon Zeppieri wrote: Of course, I'd prefer not to have to materialize this relation explicitly. This particular query, for this particular user, benefits from it, but similar queries or queries for different users may not. I think the root of the problem is that population siz

Help with row estimate problem

2024-07-29 Thread Jon Zeppieri
Hi all, I'm trying to come up with an efficient query, ideally without having to coerce the planner into doing what I want, but I'm running up against a problem with row estimates, and I'm curious if there's a better way to address the problem than what I've come up with. Here's a straightforward