diff options
Diffstat (limited to 'lib/sqlalchemy/sql/expression.py')
| -rw-r--r-- | lib/sqlalchemy/sql/expression.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/expression.py b/lib/sqlalchemy/sql/expression.py index 6021b40b1..31e24e564 100644 --- a/lib/sqlalchemy/sql/expression.py +++ b/lib/sqlalchemy/sql/expression.py @@ -2057,6 +2057,7 @@ class _DefaultColumnComparator(ColumnOperators): "mod": (__operate,), "truediv": (__operate,), "custom_op": (__operate,), + "concat_op": (__operate,), "lt": (__compare, operators.ge), "le": (__compare, operators.gt), "ne": (__compare, operators.eq), @@ -3475,7 +3476,14 @@ class Extract(ColumnElement): class UnaryExpression(ColumnElement): + """Define a 'unary' expression. + A unary expression has a single column expression + and an operator. The operator can be placed on the left + (where it is called the 'operator') or right (where it is called the + 'modifier') of the column expression. + + """ __visit_name__ = 'unary' def __init__(self, element, operator=None, modifier=None, |