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IDProjectCategoryView StatusLast Update
0000547XMB1Bugspublic2019-12-29 02:32
ReportermiqrogrooveAssigned Tomiqrogroove 
PrioritynormalSeverityminorReproducibilityrandom
Status resolvedResolutionfixed 
Product Version1.9.11.11 
Target Version1.9.11.16Fixed in Version1.9.11.16 
Summary0000547: Avoid "ORDER BY pid" in topicadmin
DescriptionWhen querying the posts table with a "tid" condition and a "pid" order, the MySQL engine must decide which of the two indexes to use. It tends to choose incorrectly when a LIMIT is also applied. In forums with large posts tables, this can result in several seconds of table scanning. Using the new style "dateline, pid" order restores performance.
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SVN Revision2776

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Issue History

Date Modified Username Field Change
2019-12-06 00:02 miqrogroove New Issue
2019-12-29 02:13 miqrogroove Assigned To => miqrogroove
2019-12-29 02:13 miqrogroove Status new => assigned
2019-12-29 02:14 miqrogroove Target Version => 1.9.11.16
2019-12-29 02:32 miqrogroove Product Version => 1.9.11.11
2019-12-29 02:32 miqrogroove Status assigned => resolved
2019-12-29 02:32 miqrogroove Resolution open => fixed
2019-12-29 02:32 miqrogroove Fixed in Version => 1.9.11.16
2019-12-29 02:32 miqrogroove SVN Revision => 2776