E.293. Release 7.4.11
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## E.293. Release 7.4.11

Release date: 2006-01-09

This release contains a variety of fixes from 7.4.10. For information about new features in the 7.4 major release, see Section E.304.

### E.293.1. Migration to Version 7.4.11

A dump/restore is not required for those running 7.4.X. However, if you are upgrading from a version earlier than 7.4.8, see Section E.296. Also, you might need to `REINDEX` indexes on textual columns after updating, if you are affected by the locale or plperl issues described below.

### E.293.2. Changes

- Fix for protocol-level Describe messages issued outside a transaction or in a failed transaction (Tom)

- Fix character string comparison for locales that consider different character combinations as equal, such as Hungarian (Tom)

  This might require `REINDEX` to fix existing indexes on textual columns.

- Set locale environment variables during postmaster startup to ensure that plperl won't change the locale later

  This fixes a problem that occurred if the postmaster was started with environment variables specifying a different locale than what initdb had been told. Under these conditions, any use of plperl was likely to lead to corrupt indexes. You might need `REINDEX` to fix existing indexes on textual columns if this has happened to you.

- Fix longstanding bug in strpos() and regular expression handling in certain rarely used Asian multi-byte character sets (Tatsuo)

- Fix bug in `/contrib/pgcrypto` gen_salt, which caused it not to use all available salt space for MD5 and XDES algorithms (Marko Kreen, Solar Designer)

  Salts for Blowfish and standard DES are unaffected.

- Fix `/contrib/dblink` to throw an error, rather than crashing, when the number of columns specified is different from what's actually returned by the query (Joe)

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