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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2009-05-09 22:51:41 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2009-05-09 22:51:41 +0000 |
| commit | 8dcf18414ba3fd68970fb5095f26bb9f358dedfe (patch) | |
| tree | 286c9dd55543baf5c7887e7d17dc26c43cd0845b /src/backend/utils/adt/xml.c | |
| parent | a41e9ec0db08dec52be8ee1c27fe55f742e1a8a9 (diff) | |
| download | postgresql-8dcf18414ba3fd68970fb5095f26bb9f358dedfe.tar.gz postgresql-8dcf18414ba3fd68970fb5095f26bb9f358dedfe.zip | |
Fix cost_nestloop and cost_hashjoin to model the behavior of semi and anti
joins a bit better, ie, understand the differing cost functions for matched
and unmatched outer tuples. There is more that could be done in cost_hashjoin
but this already helps a great deal. Per discussions with Robert Haas.
Diffstat (limited to 'src/backend/utils/adt/xml.c')
0 files changed, 0 insertions, 0 deletions