On Thu, 23 May 2019 at 15:31, Jonathan S. Katz <jkatz@postgresql.org> wrote:
> Attached is
> v3 of the patch, along with a diff.
Minor details, but this query is not valid:
> WITH c AS MATERIALIZED (
> SELECT * FROM a WHERE a.x % 4
> )
> SELECT * FROM c JOIN d ON d.y = a.x;
a.x % 4 is not a boolean clause, and "a" is not in the main query, so
a.x can't be referenced there.
How about:
WITH c AS MATERIALIZED (
SELECT * FROM a WHERE a.x % 4 = 0
)
SELECT * FROM c JOIN d ON d.y = c.x;
--
David Rowley http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
