- _Label propigates "_hide_froms()" so that scalar selects

behave more properly with regards to FROM clause #574

1 files changed, 5 insertions, 1 deletions

diff --git a/test/sql/select.py b/test/sql/select.py
index ccd5c33a8..34a37c978 100644
--- a/test/sql/select.py
+++ b/test/sql/select.py
@@ -134,8 +134,12 @@ sq.myothertable_othername AS sq_myothertable_othername FROM (" + sqstring + ") A
     def testdontovercorrelate(self):
         self.runtest(select([table1], from_obj=[table1, table1.select()]), """SELECT mytable.myid, mytable.name, mytable.description FROM mytable, (SELECT mytable.myid AS myid, mytable.name AS name, mytable.description AS description FROM mytable)""")
     
-    def testselectexists(self):
+    def testexistsascolumnclause(self):
         self.runtest(exists([table1.c.myid], table1.c.myid==5).select(), "SELECT EXISTS (SELECT mytable.myid AS myid FROM mytable WHERE mytable.myid = :mytable_myid)", params={'mytable_myid':5})
+
+        self.runtest(select([table1, exists([1], from_obj=[table2])]), "SELECT mytable.myid, mytable.name, mytable.description, EXISTS (SELECT 1 FROM myothertable) FROM mytable", params={})
+
+        self.runtest(select([table1, exists([1], from_obj=[table2]).label('foo')]), "SELECT mytable.myid, mytable.name, mytable.description, (EXISTS (SELECT 1 FROM myothertable)) AS foo FROM mytable", params={})
         
     def testwheresubquery(self):
         # TODO: this tests that you dont get a "SELECT column" without a FROM but its not working yet.