> > Thus I think we should avoid this kind of ORDER BY. Probably we should > > avoid LIMIT/OFFSET and FOR UPDATE as well. > > What of index-optimized SELECT max(...) ?
Aggregate functions in a recursive term is prohibited by the standard. For example, WITH RECURSIVE x(n) AS (SELECT 1 UNION ALL SELECT max(n) FROM x) SELECT * FROM x; produces an error. -- Tatsuo Ishii SRA OSS, Inc. Japan -- Sent via pgsql-patches mailing list (pgsql-patches@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-patches
