On Sat, Oct 25, 2008 at 1:19 PM, Ernesto Quiñones <ernestoq@xxxxxxxxx> wrote: > I use dbi-link, work fine, but I have problems when I call mysql > tables "linked" and these tables are big, maybe a millon records, the > answers is really slow, I need to wait 5 or more minutes to have an > answer in a single query like this "select * from table limit 10", I > am thinking maybe dbi-link download all the data to pgsql before to > give me the answer. Yes, that's what Postgres is doing. DBI-link is currently incapable of pushing down the predicate to the remote system because Postgres can't give it access to the predicate. > Anybody knows how improve this? If I have to push the predicate down, I'll generally write a set-returning function which takes some of the predicate, limit, and offset info to build a dynamic sql query against the remote database using dblink. -- Jonah H. Harris, Senior DBA myYearbook.com -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
