Re: Testing 9.2 in ~production environment
От | James Cloos |
---|---|
Тема | Re: Testing 9.2 in ~production environment |
Дата | |
Msg-id | m3y5nh8xcc.fsf@carbon.jhcloos.org обсуждение исходный текст |
Ответ на | Re: Testing 9.2 in ~production environment (James Cloos <cloos@jhcloos.com>) |
Ответы |
Re: Testing 9.2 in ~production environment
|
Список | pgsql-hackers |
As a followup, I find that I can avoid the seq scan by adding an index to that table as: create index mb_name_own_idx on mb ( lower(name), ownerid ); and changing the query from using the idiom: WHERE name ILIKE 'foo@bar' AND ownerid=7; to using: WHERE lower(name) = lower('foo@bar') AND ownerid=7; which saves 20+ ms on each of the 30+ k such selects in a full run. I haven't tested how fast it would be with that change and a utf8 ctype. Because of how the middleware achives its portability between pg, my et al, changing it to use lower and = will require significant surgery. Is there any way to specify the index such that the ILIKE query will use said index? -JimC -- James Cloos <cloos@jhcloos.com> OpenPGP: 1024D/ED7DAEA6
В списке pgsql-hackers по дате отправления: