https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=24741 Bug ID: 24741 Summary: Recent creation of unique index on library_groups erroneously removes rows Change sponsored?: --- Product: Koha Version: master Hardware: All OS: All Status: NEW Severity: critical Priority: P5 - low Component: Architecture, internals, and plumbing Assignee: koha-bugs@lists.koha-community.org Reporter: stefan.berndtsson@ub.gu.se QA Contact: testopia@bugs.koha-community.org Bug 21674 introduces a new unique index on library_groups. Before this is done, removal of duplicate entries is done. This check for duplicates is wrong and removes non-duplicate entries as well. The query being executed is: DELETE FROM library_groups WHERE id NOT IN ( SELECT MIN(id) FROM ( SELECT * FROM library_groups ) AS lg WHERE parent_id IS NOT NULL GROUP BY parent_id, branchcode ) AND parent_id IS NOT NULL; To test: Use Administration/Library groups, add two group on the same level. Add a library or two in each of them, then run the above query. The second of the two groups, including all its libraries will now be removed. -- You are receiving this mail because: You are the assignee for the bug. You are watching all bug changes.