Re: Remove lossy-operator RECHECK flag?
| От | Tom Lane |
|---|---|
| Тема | Re: Remove lossy-operator RECHECK flag? |
| Дата | |
| Msg-id | 19670.1208197731@sss.pgh.pa.us обсуждение |
| Ответ на | Re: Remove lossy-operator RECHECK flag? (Teodor Sigaev <teodor@sigaev.ru>) |
| Ответы |
Re: Remove lossy-operator RECHECK flag?
|
| Список | pgsql-hackers |
Teodor Sigaev <teodor@sigaev.ru> writes:
>> By the argument that it's better to break things obviously than to
>> break them subtly, risking case 4 seems more attractive than risking
>> case 2.
> The single thought is: usually, it's very hard to see that query returns more
> results that it should be. It doesn't matter for fulltext search (and it has
> very good chance to stay unnoticed forever because wrong rows will be sorted
> down by ranking function, although performance will decrease.
Hmm ... that's a good point. And the performance loss that I'm
complaining about is probably not large, unless you've got a *really*
expensive operator. Maybe we should leave it as-is.
Anybody else have an opinion?
regards, tom lane
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