Transactions and queries, at source level

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/query.lac b/tests/query.lac
new file mode 100644
index 00000000..2caf0412
--- /dev/null
+++ b/tests/query.lac
@@ -0,0 +1,16 @@
+table t1 : {A : int, B : string, C : float}
+table t2 : {A : float, D : int}
+
+datatype list a = Nil | Cons of a * list a
+
+val q1 = (SELECT * FROM t1)
+val r1 : transaction (list {A : int, B : string, C : float}) =
+        query q1
+        (fn fs _ acc => return (Cons (fs.T1, acc)))
+        Nil
+
+val r2 : transaction int =
+        ls <- r1;
+        return (case ls of
+                    Nil => 0
+                  | Cons ({A = a, ...}, _) => a)