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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 -------------------------------- |