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| author | Simon Charette <charette.s@gmail.com> | 2022-11-05 12:49:33 -0400 |
|---|---|---|
| committer | Mariusz Felisiak <felisiak.mariusz@gmail.com> | 2022-11-07 12:21:29 +0100 |
| commit | 5f09ab8c30050bbd076a9b27fb135d030c06ab75 (patch) | |
| tree | e444003f8ad4fd5f992342ae2f5faa82ee98aea7 /docs | |
| parent | 041551d716b69ee7c81199eee86a2d10a72e15ab (diff) | |
Refs #17144 -- Removed support for grouping by primary key.
No core backend require the feature anymore as it was only added to
support a MySQL'ism that has been deprecated since then.
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/releases/4.2.txt | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/docs/releases/4.2.txt b/docs/releases/4.2.txt index ba01bf12e5..bf0a36fce6 100644 --- a/docs/releases/4.2.txt +++ b/docs/releases/4.2.txt @@ -309,7 +309,12 @@ Database backend API This section describes changes that may be needed in third-party database backends. -* ... +* ``DatabaseFeatures.allows_group_by_pk`` is removed as it only remained to + accommodate a MySQL extension that has been supplanted by proper functional + dependency detection in MySQL 5.7.15. Note that + ``DatabaseFeatures.allows_group_by_selected_pks`` is still supported and + should be enabled if your backend supports functional dependency detection in + ``GROUP BY`` clauses as specified by the ``SQL:1999`` standard. Dropped support for MariaDB 10.3 -------------------------------- |