diff options
Diffstat (limited to 'lib/sqlalchemy/sql/expression.py')
| -rw-r--r-- | lib/sqlalchemy/sql/expression.py | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/lib/sqlalchemy/sql/expression.py b/lib/sqlalchemy/sql/expression.py index b6e0b5ce7..7846ac3b2 100644 --- a/lib/sqlalchemy/sql/expression.py +++ b/lib/sqlalchemy/sql/expression.py @@ -3910,13 +3910,7 @@ class Join(FromClause): def is_derived_from(self, fromclause): return fromclause is self or \ self.left.is_derived_from(fromclause) or \ - self.right.is_derived_from(fromclause) or \ - ( - isinstance(fromclause, Join) and - self.left.is_derived_from(fromclause.left) and - self.right.is_derived_from(fromclause.right) and - self.onclause.compare(fromclause.onclause) - ) + self.right.is_derived_from(fromclause) def self_group(self, against=None): return FromGrouping(self) |