--- a/lib/basis.urs	Sun Sep 07 14:30:32 2008 -0400
+++ b/lib/basis.urs	Sun Sep 07 14:38:14 2008 -0400
@@ -206,19 +206,19 @@
 val insert : fields ::: {Type}
         -> sql_table fields
         -> $(fold (fn nm (t :: Type) acc => [nm] ~ acc =>
-                [nm = sql_exp [] [] [] t] ++ acc) [] fields)
+                [nm = sql_exp [T = fields] [] [] t] ++ acc) [] fields)
         -> dml
 
-val update : changed :: {Type} -> unchanged ::: {Type} -> changed ~ unchanged
+val update : changed ::: {Type} -> unchanged ::: {Type} -> changed ~ unchanged
+        -> $(fold (fn nm (t :: Type) acc => [nm] ~ acc =>
+                [nm = sql_exp [T = changed ++ unchanged] [] [] t] ++ acc) [] changed)
         -> sql_table (changed ++ unchanged)
-        -> $(fold (fn nm (t :: Type) acc => [nm] ~ acc =>
-                [nm = sql_exp [] [] (changed ++ unchanged) t] ++ acc) [] changed)
-        -> sql_exp [] [] (changed ++ unchanged) bool
+        -> sql_exp [T = changed ++ unchanged] [] [] bool
         -> dml
 
 val delete : fields ::: {Type}
         -> sql_table fields
-        -> sql_exp [] [] fields bool
+        -> sql_exp [T = fields] [] [] bool
         -> dml