pgsql: Change Gather not to use a physical tlist.

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От Robert Haas
Тема pgsql: Change Gather not to use a physical tlist.
Дата
Msg-id E1aBoNp-0008HD-KD@gemulon.postgresql.org
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Change Gather not to use a physical tlist.

This should have been part of the original commit, but was missed.
Pushing data between processes is expensive, so we definitely want
to project away unneeded columns here, just as we do for other nodes
like Sort and Hash that care about the volume of data.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/51d152f18e124cc07c293756cc16014ba218b2df

Modified Files
--------------
src/backend/optimizer/plan/createplan.c |    5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

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