Leonardo F wrote: > why is IndexInfo.ii_Expressions a list? How can an index have more than > one expression? Sorry if it's a stupid question, but I'm not familiar with > index expressions.
Consider multi-column indexes, ie: CREATE INDEX i_foo ON foo (length(a), length(b)); Maybe you're confusing expression indexes with partial indexes? The predicate for a partial index is stored in ii_Predicate, not ii_Expressions. Although ii_Predicate is a list too; in that case it's a list of clauses that are implicitly ANDed together. -- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
