On 2016/04/14 12:04, Etsuro Fujita wrote:
On 2016/04/14 4:57, Robert Haas wrote:
2. When a join is pushed down, deparse system columns using something
like "CASE WHEN r1.* IS NOT NULL THEN 0 END", except for the table OID
column, which gets deparsed with the table OID in place of 0. This
delivers the correct behavior in the presence of outer joins.
I think that that would cause useless data transfer for such culumns.
Why not set values locally for such columns?
At least for the table OID.
Best regards,
Etsuro Fujita
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
