Re: ANALYZE ONLY
От | Tom Lane |
---|---|
Тема | Re: ANALYZE ONLY |
Дата | |
Msg-id | 1661518.1724194613@sss.pgh.pa.us обсуждение исходный текст |
Ответ на | Re: ANALYZE ONLY (David Rowley <dgrowleyml@gmail.com>) |
Список | pgsql-hackers |
David Rowley <dgrowleyml@gmail.com> writes: > On Wed, 21 Aug 2024 at 06:41, Robert Haas <robertmhaas@gmail.com> wrote: >> I like trying to use ONLY somehow. > Do you mean as an ANALYZE command option, i.e. ANALYZE (only) table; > or as a table modifier like gram.y's extended_relation_expr? > Making it a command option means that the option would apply to all > tables listed, whereas if it was more like an extended_relation_expr, > the option would be applied per table listed in the command. > 1. ANALYZE ONLY ptab, ptab2; -- gather stats on ptab but not on its > partitions but get stats on ptab2 and stats on its partitions too. > 2. ANALYZE ONLY ptab, ONLY ptab2; -- gather stats on ptab and ptab2 > without doing that on any of their partitions. FWIW, I think that's the right approach, for consistency with the way that ONLY works in DML. regards, tom lane
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