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Diffstat (limited to 'lib/sqlalchemy/sql/operators.py')
| -rw-r--r-- | lib/sqlalchemy/sql/operators.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/operators.py b/lib/sqlalchemy/sql/operators.py index dcea5a0f6..db6c40e9a 100644 --- a/lib/sqlalchemy/sql/operators.py +++ b/lib/sqlalchemy/sql/operators.py @@ -524,6 +524,10 @@ _commutative = set([eq, ne, add, mul]) def is_commutative(op): return op in _commutative +def is_ordering_modifier(op): + return op in (asc_op, desc_op, + nullsfirst_op, nullslast_op) + _associative = _commutative.union([concat_op, and_, or_]) |