Tom Cross (decius@whack.org) reports a bug with a severity of 2
The lower the number the more severe it is.
Short Description
problem with LIKE pattern matches involving % and \_
Long Description
The following pattern matches do not work:
LIKE '%\_%'
LIKE '%\_'
LIKE '\_%'
They seem to match everything even if it does not contain an underscore. There seems to be no problem if another
character
is involved somehow, such as LIKE '\_b%'
I'm running 7.1.3...
Sample Code
somedatabase=# select * from tom;
stuff
-----------
blah
blah_
_blah
blah_blah
(4 rows)
somedatabase=# select * from tom where stuff LIKE '%\_%';
stuff
-----------
blah
blah_
_blah
blah_blah
(4 rows)
somedatabase=# select * from tom where stuff LIKE '\_%';
stuff
-----------
blah
blah_
_blah
blah_blah
(4 rows)
somedatabase=# select * from tom where stuff LIKE '%h\_%';
stuff
-----------
blah_
blah_blah
(2 rows)
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