John,

>
>Heck, if you can just fire data at a SP and update it all, that's far easier than creating efficient SQL updates and the rest of it. I wonder whether all this change tracking stuff is just Emperor's Clothes? Time to examine closely!

when I did some PostgreSQL I found exactly the delete/insert for updates behaviour Perry described a few messages above.
And Rod definately has a point: in quite a few the scenarios the old simple versions work well enough.

regards

thomas