On 21 April 2017 at 22:30, Tels <nospam-pg-ab...@bloodgate.com> wrote: > I'd rather see: > > CREATE STATISTICS stats_name ON table(col); > > as this both mirrors CREATE INDEX and foreign keys with REFERENCES. It > could also be extended to both more columns, expressions or other tables > like so: > > CREATE STATISTICS stats ON t1(col1, col2 / 2), t2 (a,b); > > and even: > > CREATE STATISTICS stats ON t1(col1, col2 / 2), t2 (a,b) WITH (options) > WHERE t2.a > 4;
How would you express a join condition with that syntax? > This looks easy to remember, since it compares to: > > CREATE INDEX idx_name ON t2(a,b) WITH (options) WHERE t2.a > 4; > > Or am I'm missing something? Sadly yes, you are, and it's not the first time. I seem to remember mentioning this to you already in [1]. Please, can you read over [2], it mentions exactly what you're proposing and why it's not any good. [1] https://www.postgresql.org/message-id/cakjs1f9hmet+7adiceau8heompob5pkkcvyzliezje3dvut...@mail.gmail.com [2] https://www.postgresql.org/message-id/CAEZATCUtGR+U5+QTwjHhe9rLG2nguEysHQ5NaqcK=vbj78v...@mail.gmail.com -- David Rowley http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
