"Martijn van Oosterhout" <kleptog@xxxxxxxxx> writes: > On Wed, Nov 28, 2007 at 09:11:07AM -0600, Abraham, Danny wrote: >> Is there a way to break the PGresult array to chuncks Like Oracle? >> >> I mean, without changing the text of given queries, >> >> can we somehow limit the memory consumption of a client that is using >> LIBPQ? > > Use non-blocking mode to get the data in chunks. You can't easy control > the number of rows you get each time though... This doesn't really help. It's nonblocking but you still can't get libpq to actually give you a result data structure until the entire results have accumulated. The only interface like this libpq supports is to use cursors in your SQL and then FETCH n for each chunk. There's no libpq support for receiving results incrementally. If you're writing a driver implementing the protocol from scratch you could expose chunks of results to the application but there's no protocol-level support for it so you can't directly control the rate at which results arrive or the chunk size or anything like that. -- Gregory Stark EnterpriseDB http://www.enterprisedb.com Get trained by Bruce Momjian - ask me about EnterpriseDB's PostgreSQL training! ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
