1 files changed, 20 insertions, 0 deletions
diff --git a/tests/group_by.ur b/tests/group_by.ur
index 569676d5..93655568 100644
--- a/tests/group_by.ur
+++ b/tests/group_by.ur
@@ -9,3 +9,23 @@ val q4 = (SELECT * FROM t1 WHERE t1.A = 0 GROUP BY t1.C HAVING t1.C < 0.2)
 
 val q5 = (SELECT t1.A, t2.D FROM t1, t2 GROUP BY t2.D, t1.A)
 val q6 = (SELECT t1.A, t2.D FROM t1, t2 WHERE t1.C = 0.0 GROUP BY t2.D, t1.A HAVING t1.A = t1.A AND t2.D = 17)
+
+
+datatype list a = Nil | Cons of a * list a
+
+val r1 : transaction (list {B : string}) =
+        query q1
+        (fn fs acc => return (Cons (fs.T1, acc)))
+        Nil
+
+val r2 : transaction string =
+        ls <- r1;
+        return (case ls of
+                    Nil => "Problem"
+                  | Cons ({B = b, ...}, _) => b)
+
+val main : unit -> transaction page = fn () =>
+        s <- r2;
+        return <html><body>
+                {cdata s}
+        </body></html>