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| author | Marc G. Fournier <scrappy@hub.org> | 1996-08-19 01:52:36 +0000 |
|---|---|---|
| committer | Marc G. Fournier <scrappy@hub.org> | 1996-08-19 01:52:36 +0000 |
| commit | f796387b602c8d0c538eba6b96bf86c399c4cd36 (patch) | |
| tree | b396eb71c6595fe4db14065f0c310e5dd033dfa3 /src/backend/commands/command.c | |
| parent | 9848d3655d44aa2e58d28fe9f93a94b2934eedc8 (diff) | |
| download | postgresql-f796387b602c8d0c538eba6b96bf86c399c4cd36.tar.gz postgresql-f796387b602c8d0c538eba6b96bf86c399c4cd36.zip | |
|From: Dan McGuirk <mcguirk@indirect.com>
|
|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?
|
Diffstat (limited to 'src/backend/commands/command.c')
0 files changed, 0 insertions, 0 deletions