Hi, I have problems with my database becoming huge in size (around 150 GB right now, and 2/3 for only three tables, each having around 30 millions tuples. Space is spent mainly on indices.).
I have a lot of multi-column varchar primary keys (natural keys), and lot of foreign keys on these tables and thus a lot of indices. When using VARCHAR, we defaulted to VARCHAR(32) (because on _some_ of the identifiers, we have to apply md5). We assumed that using VARCHAR(32) but having values at most 4 characters long (for example) wouldn't influence indices size, ie it would be the same as using VARCHAR(4) to keep the example. Now I really doubt if we were right :) So, what should we expect ? And are there other factors influencing indices size ? Thanks, Franck -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
