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-rw-r--r--lib/sqlalchemy/sql/compiler.py4
-rw-r--r--lib/sqlalchemy/sql/expression.py7
2 files changed, 5 insertions, 6 deletions
diff --git a/lib/sqlalchemy/sql/compiler.py b/lib/sqlalchemy/sql/compiler.py
index 5140b7f20..6af65ec14 100644
--- a/lib/sqlalchemy/sql/compiler.py
+++ b/lib/sqlalchemy/sql/compiler.py
@@ -405,8 +405,8 @@ class DefaultCompiler(engine.Compiled):
else:
return text
- def visit_unary(self, unary, **kwargs):
- s = self.process(unary.element)
+ def visit_unary(self, unary, **kw):
+ s = self.process(unary.element, **kw)
if unary.operator:
s = self.operator_string(unary.operator) + " " + s
if unary.modifier:
diff --git a/lib/sqlalchemy/sql/expression.py b/lib/sqlalchemy/sql/expression.py
index b5eb0eee9..0dae6716d 100644
--- a/lib/sqlalchemy/sql/expression.py
+++ b/lib/sqlalchemy/sql/expression.py
@@ -400,8 +400,8 @@ def not_(clause):
def distinct(expr):
"""Return a ``DISTINCT`` clause."""
-
- return _UnaryExpression(expr, operator=operators.distinct_op)
+ expr = _literal_as_binds(expr)
+ return _UnaryExpression(expr, operator=operators.distinct_op, type_=expr.type)
def between(ctest, cleft, cright):
"""Return a ``BETWEEN`` predicate clause.
@@ -1476,8 +1476,7 @@ class _CompareMixin(ColumnOperators):
def distinct(self):
"""Produce a DISTINCT clause, i.e. ``DISTINCT <columnname>``"""
-
- return _UnaryExpression(self, operator=operators.distinct_op)
+ return _UnaryExpression(self, operator=operators.distinct_op, type_=self.type)
def between(self, cleft, cright):
"""Produce a BETWEEN clause, i.e. ``<column> BETWEEN <cleft> AND <cright>``"""