diff options
Diffstat (limited to 'lib/sqlalchemy/sql/expression.py')
| -rw-r--r-- | lib/sqlalchemy/sql/expression.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/expression.py b/lib/sqlalchemy/sql/expression.py index c60341802..aff8654f2 100644 --- a/lib/sqlalchemy/sql/expression.py +++ b/lib/sqlalchemy/sql/expression.py @@ -2202,6 +2202,9 @@ class Join(FromClause): return "Join object on %s(%d) and %s(%d)" % (self.left.description, id(self.left), self.right.description, id(self.right)) description = property(description) + def is_derived_from(self, fromclause): + return fromclause is self or self.left.is_derived_from(fromclause) or self.right.is_derived_from(fromclause) + def self_group(self, against=None): return _FromGrouping(self) |