> Emphasis on "always". If the result of the function, given the same > argument values, can be different after a SET, then it doesn't qualify > for immutability. At least, that's my understanding. Hmmmm. But within the context of the query plan itself, the results of that expression are going to be constant. That is, for a given query execution, it's always going to be the same comparison. So this goes back to my original assertion that CE can't be fixed ... -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
