diff options
| -rw-r--r-- | lib/sqlalchemy/dialects/mysql/base.py | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/sqlalchemy/dialects/mysql/base.py b/lib/sqlalchemy/dialects/mysql/base.py index b1b249001..bdc117e91 100644 --- a/lib/sqlalchemy/dialects/mysql/base.py +++ b/lib/sqlalchemy/dialects/mysql/base.py @@ -1868,6 +1868,21 @@ class MySQLDialect(default.DefaultDialect): default.DefaultDialect.initialize(self, connection) + self._warn_for_known_db_issues() + + def _warn_for_known_db_issues(self): + if self._is_mariadb: + mdb_version = self._mariadb_normalized_version_info + if mdb_version > (10, 2) and mdb_version < (10, 2, 9): + util.warn( + "MariaDB %r before 10.2.9 has known issues regarding " + "CHECK constraints, which impact handling of NULL values " + "with SQLAlchemy's boolean datatype (MDEV-13596). An " + "additional issue prevents proper migrations of columns " + "with CHECK constraints (MDEV-11114). Please upgrade to " + "MariaDB 10.2.9 or greater, or use the MariaDB 10.1 " + "series, to avoid these issues." % (mdb_version, )) + @property def _is_mariadb(self): return 'MariaDB' in self.server_version_info |