https://bugzilla.wikimedia.org/show_bug.cgi?id=23682
Summary: categorytree is inefficient
Product: MediaWiki extensions
Version: any
Platform: All
OS/Version: All
Status: NEW
Severity: enhancement
Priority: Normal
Component: CategoryTree
AssignedTo: [email protected]
ReportedBy: [email protected]
categorytree forces scans of millions of rows (for large categories) to return
0 row datasets quite often.
this has been discussed in the past a lot, I'll write it down yet again.
there're few fixes, one is by prefixing cl_sortkey with character not used in
category names and filtering by it - would need rewriting sortindex only for
subset of rows.
another is creating separate columns, creating or replacing indexes, etc - in
categorylinks table
another is maintaining subcategories table per category
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