Last modified: 2010-05-15 15:52:02 UTC

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Bug 10039 - MySQL 5 binary schema broken
MySQL 5 binary schema broken
Product: MediaWiki
Classification: Unclassified
Database (Other open bugs)
All All
: High major (vote)
: ---
Assigned To: Nobody - You can work on this!
Depends on:
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Reported: 2007-05-27 09:06 UTC by Tim Starling
Modified: 2010-05-15 15:52 UTC (History)
1 user (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Description Tim Starling 2007-05-27 09:06:36 UTC
CHAR fields with a table default charset of "binary" are silently converted to the BINARY field type, which automatically pads data with null characters on the right. This occurs in a number of places in the MW 1.10 binary schema. These null characters are exposed to MediaWiki causing various bugs. The solution (discussed with Domas on #mediawiki) is to use VARCHAR instead of CHAR in all the relevant places, which will be silently converted to VARBINARY. VARBINARY has a length byte and is thus capable of binary-safe storage of variable-length fields.
Comment 1 Rob Church 2007-07-09 08:33:38 UTC
Fixed by Tim in r23239, r23246 and r23247; backported to 1.10 branch in r23651 and r23652.

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