--- a/DBI.lua	Fri Dec 19 09:17:16 2008 +0000
+++ b/DBI.lua	Sat Dec 20 02:37:22 2008 +0000
@@ -67,5 +67,11 @@
 	return false, err
     end
 
-    return sth:execute(...)
+    local ok, err = sth:execute(...)
+
+    if not ok then
+        return false, err
+    end
+
+    return sth:affected()
 end