https://bugzilla.wikimedia.org/show_bug.cgi?id=71530
Bug ID: 71530
Summary: Invalid GROUP BY in SpecialActiveusers
Product: MediaWiki
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: Special pages
Assignee: [email protected]
Reporter: [email protected]
Web browser: ---
Mobile Platform: ---
When using a database that requires non-aggregated columns in the GROUP BY
(e.g. Postgres), SpecialActiveusers fails because the user_name and user_id
columns are brought back unaggregatged, but do not appear in the GROUP BY. The
solution is to change SpecialActiveusers.php, inside of getQueryInfo, the
abovementioned columns should be added to the GROUP BY array. Alternatively, if
this is suboptimal for MySQL, the list of grouped columns should be conditional
based on the implicitGroupby property of the database (see for example
WikiPage.php).
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