> We try fairly hard to ensure that the row count estimate for a given relation > does not vary across paths, so I concur with the OP that this is a bug. > Having > said that, I'm not sure that the consequences are significant. As you say, > the > estimates seem to get a lot closer as soon as the table has some statistics. > (But nonetheless, they are not identical, so it's still a bug.)
Yes, the estimates seem to get a lot closer as soon as the table has some statistics. > I'm not sure that the consequences are significant. At least it doesn't make any difference to me for now. I noticed this problem while testing aggregation. It looks a little weird, so I emailed. Thanks every one.
