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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2013-02-13 14:07:26 -0500 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2013-02-13 14:07:26 -0500 |
| commit | 697f5cadf5d81eeee3f3018d711ef33261dc7cd5 (patch) | |
| tree | 3c736f0a8e9eb1e8f4e707db6b7a9d5607003eb6 /src/backend/regex/regcomp.c | |
| parent | 06af3f96568646e7f878622bfa6e73f9eaa5f3f0 (diff) | |
| download | postgresql-697f5cadf5d81eeee3f3018d711ef33261dc7cd5.tar.gz postgresql-697f5cadf5d81eeee3f3018d711ef33261dc7cd5.zip | |
Fix contrib/pg_trgm's similarity() function for trigram-free strings.
Cases such as similarity('', '') produced a NaN result due to computing
0/0. Per discussion, make it return zero instead.
This appears to be the basic cause of bug #7867 from Michele Baravalle,
although it remains unclear why her installation doesn't think Cyrillic
letters are letters.
Back-patch to all active branches.
Diffstat (limited to 'src/backend/regex/regcomp.c')
0 files changed, 0 insertions, 0 deletions