Merge "Disallow AliasedReturnsRows from execution"

1 files changed, 7 insertions, 13 deletions

diff --git a/lib/sqlalchemy/sql/roles.py b/lib/sqlalchemy/sql/roles.py
index 1c8276eb6..7d64e8382 100644
--- a/lib/sqlalchemy/sql/roles.py
+++ b/lib/sqlalchemy/sql/roles.py
@@ -155,26 +155,20 @@ class AnonymizedFromClauseRole(StrictFromClauseRole):
         raise NotImplementedError()
 
 
-class CoerceTextStatementRole(SQLRole):
-    _role_name = "Executable SQL or text() construct"
+class ReturnsRowsRole(SQLRole):
+    _role_name = (
+        "Row returning expression such as a SELECT, a FROM clause, or an "
+        "INSERT/UPDATE/DELETE with RETURNING"
+    )
 
 
-class StatementRole(CoerceTextStatementRole):
+class StatementRole(SQLRole):
     _role_name = "Executable SQL or text() construct"
 
-    _is_future = False
-
     _propagate_attrs = util.immutabledict()
 
 
-class ReturnsRowsRole(StatementRole):
-    _role_name = (
-        "Row returning expression such as a SELECT, a FROM clause, or an "
-        "INSERT/UPDATE/DELETE with RETURNING"
-    )
-
-
-class SelectStatementRole(ReturnsRowsRole):
+class SelectStatementRole(StatementRole, ReturnsRowsRole):
     _role_name = "SELECT construct or equivalent text() construct"
 
     def subquery(self):