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diff demo/treeFun.ur @ 470:7cb418e9714f

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Tree demo works
author Adam Chlipala <adamc@hcoop.net>
date Thu, 06 Nov 2008 18:49:38 -0500
parents b393c2fc80f8
children 20fab0e96217
line wrap: on
line diff
--- a/demo/treeFun.ur	Thu Nov 06 17:09:53 2008 -0500
+++ b/demo/treeFun.ur	Thu Nov 06 18:49:38 2008 -0500
@@ -18,7 +18,7 @@
              (root : option M.key) =
         let
             fun recurse (root : option key) =
-                queryX' (SELECT * FROM tab WHERE tab.{parent} = {root})
+                queryX' (SELECT * FROM tab WHERE {[eqNullable' (SQL tab.{parent}) root]})
                         (fn r =>
                             children <- recurse (Some r.Tab.id);
                             return <xml>