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author | Tom Lane <tgl@sss.pgh.pa.us> | 2008-03-19 02:41:15 +0000 |
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committer | Tom Lane <tgl@sss.pgh.pa.us> | 2008-03-19 02:41:15 +0000 |
commit | a1453f121bd44aa1b37ac213e2716640260a75eb (patch) | |
tree | 7b4084fedd474ea6dc214b307f1b6e92c15c6070 /src/include/postgres.h | |
parent | 0d52d7a71efd0f090b62f3bfa77bd0060aa560d5 (diff) | |
download | postgresql-a1453f121bd44aa1b37ac213e2716640260a75eb.tar.gz postgresql-a1453f121bd44aa1b37ac213e2716640260a75eb.zip |
Fix regexp substring matching (substring(string from pattern)) for the corner
case where there is a match to the pattern overall but the user has specified
a parenthesized subexpression and that subexpression hasn't got a match.
An example is substring('foo' from 'foo(bar)?'). This should return NULL,
since (bar) isn't matched, but it was mistakenly returning the whole-pattern
match instead (ie, 'foo'). Per bug #4044 from Rui Martins.
This has been broken since the beginning; patch in all supported versions.
The old behavior was sufficiently inconsistent that it's impossible to believe
anyone is depending on it.
Diffstat (limited to 'src/include/postgres.h')
0 files changed, 0 insertions, 0 deletions