I have a table that contains my unique identifiers and their respective values. In another table, I have a field that is an array of integers. Is there a simple way for one to build a constraint that checks each array value against the primary key table even though the field types don't exactly match? (i.e. int vs int[]) ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq