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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-06-10 02:21:05 +0000 |
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| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-06-10 02:21:05 +0000 |
| commit | 3b167a4099c9ea2e86cd536afb75becd1f3f3875 (patch) | |
| tree | cdba797e824f8145bbaf1deb7dbc44f15df5b7a7 /src/backend/access/gist/gistxlog.c | |
| parent | 39cee738895447cb09bcf9be04ab85b97531d951 (diff) | |
| download | postgresql-3b167a4099c9ea2e86cd536afb75becd1f3f3875.tar.gz postgresql-3b167a4099c9ea2e86cd536afb75becd1f3f3875.zip | |
If a LIMIT is applied to a UNION ALL query, plan each UNION arm as
if the limit were directly applied to it. This does not actually
add a LIMIT plan node to the generated subqueries --- that would be
useless overhead --- but it does cause the planner to prefer fast-
start plans when the limit is small. After an idea from Phil Endecott.
Diffstat (limited to 'src/backend/access/gist/gistxlog.c')
0 files changed, 0 insertions, 0 deletions