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: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
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.
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