Re: retrieving parts of a resultset
От | Christopher Browne |
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Тема | Re: retrieving parts of a resultset |
Дата | |
Msg-id | m31xp7j6kn.fsf@wolfe.cbbrowne.com обсуждение исходный текст |
Ответ на | retrieving parts of a resultset (Christoffer Gurell <orbit@0x63.nu>) |
Ответы |
JOIN where you want null columns
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Список | pgsql-general |
A long time ago, in a galaxy far, far away, orbit@0x63.nu (Christoffer Gurell) wrote: >> I think you should use a cursor; you declare it, and then you fetch the >> rows as you need them. > > thanks this works really nice.. just one more question .. how do i check the > number of rows in a cursor? or do i have to do a select count(*) on the query > i use to create the cursor? Make sure that the count(*) query takes place in the scope of the same transaction, and that you SET TRANSACTION ISOLATION LEVEL SERIALIZABLE in that transaction, otherwise the count(*) query may find different results... -- (reverse (concatenate 'string "gro.gultn" "@" "enworbbc")) http://www3.sympatico.ca/cbbrowne/finances.html Nobody can fix the economy. Nobody can be trusted with their finger on the button. Nobody's perfect. VOTE FOR NOBODY.
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