diff options
Diffstat (limited to 'lib/sqlalchemy')
| -rw-r--r-- | lib/sqlalchemy/orm/util.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/util.py b/lib/sqlalchemy/orm/util.py index 8dfaf7888..43709a58c 100644 --- a/lib/sqlalchemy/orm/util.py +++ b/lib/sqlalchemy/orm/util.py @@ -735,7 +735,10 @@ def with_polymorphic(base, classes, selectable=False, This can be important when using the with_polymorphic() to create the target of a JOIN on a backend that does not support parenthesized joins, such as SQLite and older - versions of MySQL. + versions of MySQL. However if the + :paramref:`.with_polymorphic.selectable` parameter is in use + with an existing :class:`.Alias` construct, then you should not + set this flag. :param flat: Boolean, will be passed through to the :meth:`.FromClause.alias` call so that aliases of :class:`.Join` |