I'm wondering why a IN b isn't equivalent to a = ANY b for arrays, as it is for subqueries.
That is, why can't you write SELECT 1 IN ( ARRAY[1, 2, 3] ); when you can write SELECT 1 = ANY ( ARRAY[1, 2, 3] ); ? I'm guessing that there is a semantic inconsistency between these expressions, as the first one considers what is in parentheses as a list, the second one as a single expression. That would be very bad. -- Peter Eisentraut http://developer.postgresql.org/~petere/ ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
