On Wed, Mar 21, 2007 at 05:32:21PM -0400, Andrew Dunstan wrote: > > I was looking at the TODO list today and noticed that we don't seem to > have an item for libpq cursor support. I see it's been discussed in the > past ( e.g. > http://archives.postgresql.org/pgsql-interfaces/2000-09/msg00082.php ). > We have occasional reports of libpq apps blowing up on huge resultsets, > so ISTM this would be a good thing to have on the list.
There are a few issues here. Right now, if you code your client correctly, you can retreive partial resultsets before the query has finished executing (sort of streaming). However, it is a bit clumsy. If you get libpq to wrap each query with a DECLARE CURSOR, you'd have to teach it what queries can and can't have it. It would be nicer to do it at the protocol level, but I don't know if that's supported. Have a nice day, -- Martijn van Oosterhout <firstname.lastname@example.org> http://svana.org/kleptog/ > From each according to his ability. To each according to his ability to > litigate.
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