Hi, I have read a few articles and I'm not sure if it's me or the authors but I do not believe my question was answered.
If I have table that has a PK and a FK - will the planner use the FK just same as it would use the PK? IOW's is a FK also an index used by the planner? I have a lagacy table that contains a FK constraint (vendor_id --> vendor_info). I believe I need an index to improve the performance of a query because I'm using the column as part of my join. Explain does not appear to use it as an index (instead of a seq scan it uses a hash join). But the table all ready has a FK key contraint on the column. Thanks in advance, Johnf -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
