On Mon, Jan 12, 2009 at 1:38 PM, Bruno Lavoie <bruno.lavoie@xxxxxxxxx> wrote: > Hello, > > I have a column with a small number of distinct values, indexing this one > with a standard BTree is useless. How do I can index this column > efficiently? I searched and it seems that pg doesn't support the creation of > persistent bitmap indexes... Is that feature planned in next releases of pg? You have a few options based on your access patterns. If you tend to access just one of these an get them all at once, then either clusting on this value, or partitioning your table will help. If you access your data using these values and other column values at the same time, then partial or multi-column indexes might help. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
