Manual:FixMergeHistoryCorruption.php/en

Details
fixMergeHistoryCorruption.php is a to clears rows of pages corrupted by MergeHistory, those pages exist but have no visible revision.

These pages are completely inacessible via the UI due to revision/title mismatch exceptions in RevisionStore and elsewhere.

These are rows in that have   entry with corresponding   but no associated   entry in revision table. Such rows create ghost pages because their  is actually living on different pages (which possess the associated   on  now).