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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2009-03-26 17:15:35 +0000 |
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| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2009-03-26 17:15:35 +0000 |
| commit | f38fbf31f5719bb84b18042a7f415a4f20db2bfa (patch) | |
| tree | 9de323400560bd677e4402727b1f6bb3ec9834e9 /src/interfaces/ecpg/preproc/variable.c | |
| parent | ee4c187f6471af5f71fd5dd12021fa8d7c4fce11 (diff) | |
| download | postgresql-f38fbf31f5719bb84b18042a7f415a4f20db2bfa.tar.gz postgresql-f38fbf31f5719bb84b18042a7f415a4f20db2bfa.zip | |
If we expect a hash join to be performed in multiple batches, suppress
"physical tlist" optimization on the outer relation (ie, force a projection
step to occur in its scan). This avoids storing useless column values when
the outer relation's tuples are written to temporary batch files.
Modified version of a patch by Michael Henderson and Ramon Lawrence.
Diffstat (limited to 'src/interfaces/ecpg/preproc/variable.c')
0 files changed, 0 insertions, 0 deletions