- fix the labeled column with column_expression() issue, finishes [ticket:1534]

- epic documentation sweep for new operator system, making ORM links consistent
and complete, full documentation and examples for type/SQL expression feature
- type_coerce() explicitly accepts BindParamClause objects
- change UserDefinedType to coerce the other side to itself by default as this
is much more likely what's desired
- make coerce_compared_type() fully public on all types
- have profiling run the test no matter what so that the test_zoomarks don't fail
when callcounts are missing

1 files changed, 9 insertions, 2 deletions

diff --git a/lib/sqlalchemy/sql/compiler.py b/lib/sqlalchemy/sql/compiler.py
index f975225d6..49df9322e 100644
--- a/lib/sqlalchemy/sql/compiler.py
+++ b/lib/sqlalchemy/sql/compiler.py
@@ -948,8 +948,15 @@ class SQLCompiler(engine.Compiled):
             else:
                 add_to_result_map = None
 
-        if isinstance(col_expr, sql.Label):
-            result_expr = col_expr
+        if isinstance(column, sql.Label):
+            if col_expr is not column:
+                result_expr = _CompileLabel(
+                        col_expr,
+                        column.name,
+                        alt_names=(column.element,)
+                    )
+            else:
+                result_expr = col_expr
 
         elif select is not None and \
                 select.use_labels and \