On Sat, Oct 26, 2013 at 12:02 PM, Andres Freund <and...@2ndquadrant.com> wrote: > Imo what it does looks sane - it adds parentheses whenever a child of a > set operation is a set operation again to make sure the order in which > the generated set operations are parsed/interpreted stays the same.
But UNION ALL is associative. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
