On Tue, 11 Feb 2003, Wilkinson Charlie E wrote: > Greetings, > Can anyone enlighten me or point me at resources concerning use of pgsql > with > very large datasets? > > My specific problem is this: > > I have two tables, one with about 100 million rows and one with about 22,000 > rows. My plan was to inner join the two tables on an integer key and output > the 4 significant columns, excluding the keys. (Those with a better > understanding > of pgsql internals, feel free to laugh.) The result was a big angry psql > that > grew to 800+MB before I had to kill it.
Was it psql that grew to 800Mb or a backend? If the former, how many rows do you expect that to return? You probably want to look into using cursors rather than returning the entire result set at once. ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster
