will either references or
generate an expression. Any expression that is generated and is not
referenced by any top on top will be eliminated.
Regards
Harmeek
On Sun, Jul 10, 2011 at 10:28 AM, Tom Lane t...@sss.pgh.pa.us wrote:
HarmeekSingh Bedi harmeeksi...@gmail.com writes:
Thanks Tom
wrote:
HarmeekSingh Bedi harmeeksi...@gmail.com writes:
In a plan where Node 1 is parent {say join) and Node 2 is child
(say scan) . If node 1 has a expression say foo(column) then scan
will project 'column' for sure and join will
evaluate foo(column). Now if the node above join does
Hi .
Apology for the bandwith. Did not know who to ask the question . I
was interested in a brief detail on how postgress does expression
pruning between nodes . The basic question is as follows
Scenerio
In a plan where Node 1 is parent {say join) and Node 2 is child
(say scan) . If node
Hi All.
I just looked this email from postgress sql site and wanted to
ask you a question. I would be obliged if you could help me understand
the duplicate key insertion behaviour correctly in Post gress SQL.
The question is related to Btree [Leman and Yao] implementation
When
