Re: "no unpinned buffers available" ? why? (hstore and
От | Richard Huxton |
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Тема | Re: "no unpinned buffers available" ? why? (hstore and |
Дата | |
Msg-id | 459BCAB7.5010900@archonet.com обсуждение исходный текст |
Ответ на | Re: "no unpinned buffers available" ? why? (hstore and plperl involved) ("hubert depesz lubaczewski" <depesz@gmail.com>) |
Ответы |
Re: "no unpinned buffers available" ? why? (hstore and plperl involved)
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Список | pgsql-general |
hubert depesz lubaczewski wrote: >> But, it looks to me like you might be able to replace the plperl >> function by just a straight query. That should be faster too. >> > > really? i was thinking really hard on how to do it in sql, but didn't found > any way to achieve it. actually - i dont really think it would be possible > at all in standard sql. but then - maybe i'm wrong. Well, it looks to me like the main problem is you're trying to convert a table like: (advert_id, cust1, cust2, cust3) to: (advert_id, codename, codevalue). If you do that separately at the start of the process, (one query per custom column in the old table) then it becomes straightforward. -- Richard Huxton Archonet Ltd
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