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TITLE="Release 7.4.21"
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>PostgreSQL 9.1beta1 Documentation</A
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TITLE="Release 7.4.21"
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HREF="release-7-4-21.html"
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>Appendix E. Release Notes</TD
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TITLE="Release 7.4.19"
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HREF="release-7-4-19.html"
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NAME="RELEASE-7-4-20"
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>E.115. Release 7.4.20</A
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> This release contains a variety of fixes from 7.4.19.
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For information about new features in the 7.4 major release, see
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HREF="release-7-4.html"
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>E.115.1. Migration to Version 7.4.20</A
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> A dump/restore is not required for those running 7.4.X.
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However, if you are upgrading from a version earlier than 7.4.11,
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see the release notes for 7.4.11.
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> Fix conversions between ISO-8859-5 and other encodings to handle
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two dots) (Sergey Burladyan)
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> Fix a few datatype input functions
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that were allowing unused bytes in their results to contain
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uninitialized, unpredictable values (Tom)
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> This could lead to failures in which two apparently identical literal
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values were not seen as equal, resulting in the parser complaining
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> Fix a corner case in regular-expression substring matching
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> The problem occurs when there is a match to the pattern overall but
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the user has specified a parenthesized subexpression and that
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subexpression hasn't got a match. An example is
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>substring('foo' from 'foo(bar)?')</TT
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This should return NULL, since <TT
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it was mistakenly returning the whole-pattern match instead (ie,
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> Fix incorrect result from <SPAN
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>PGTYPEStimestamp_sub()</CODE
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> macro to not fail with <SPAN
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> This problem affects <SPAN
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> (V0) C functions that
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return boolean. The fix is already in 8.3, but the need to
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back-patch it was not realized at the time.
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> Fix longstanding <TT
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> In rare cases a session that had just executed a
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> might not get a notification, even though
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one would be expected because the concurrent transaction executing
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> was observed to commit later.
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> A side effect of the fix is that a transaction that has executed
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a not-yet-committed <TT
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> command will not see any
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should it choose to look; formerly it would have. This behavior
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was never documented one way or the other, but it is possible that
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some applications depend on the old behavior.
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> Fix display of constant expressions in <TT
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> An explictly casted constant would be shown incorrectly. This could
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for example lead to corruption of a view definition during
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> to handle NOTICE messages correctly
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during COPY OUT (Tom)
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> This failure has only been observed to occur when a user-defined
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datatype's output routine issues a NOTICE, but there is no
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guarantee it couldn't happen due to other causes.
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