"Chris St Denis" <chris@xxxxxxxx> writes: > Does postgres support in-memory only tables like the mysql HASH table type? No, and it doesn't seem particularly necessary: a table that is being hit heavily will stay in cache buffers anyhow. You don't need any special mechanism. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq