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| author | Marc G. Fournier <scrappy@hub.org> | 1996-08-19 01:07:43 +0000 |
|---|---|---|
| committer | Marc G. Fournier <scrappy@hub.org> | 1996-08-19 01:07:43 +0000 |
| commit | e38de384e2c529540f79032a589c367e6b2688b3 (patch) | |
| tree | 014a1d8a64947b6fa9f53d38061fe79dd01e2a43 /src/backend/executor/executor.h | |
| parent | f46246a27967945253ea996450e66da2b4f398cf (diff) | |
|This patch fixes a backend crash that happens sometimes when you try to
|join on a field that contains NULL in some rows. Postgres tries to
|compute a hash value of the field you're joining on, but when the field
|is NULL, the pointer it thinks is pointing to the data is really just
|pointing to random memory. This forces the hash value of NULL to be 0.
|
|It seems that nothing matches NULL on joins, even other NULL's (with or
|without this patch). Is that what's supposed to happen?
|
Submitted by: Dan McGuirk <mcguirk@indirect.com>
Diffstat (limited to 'src/backend/executor/executor.h')
0 files changed, 0 insertions, 0 deletions