> From: Thomas Munro [mailto:thomas(dot)munro(at)enterprisedb(dot)com]
> FWIW standard SQL may not allow it but Postgres does, and it's even possible
> to exclude duplicates by using an expression that references the whole row.
Thank you. I didn't know that.
I'll use it if I can verify it works right. It's not that important -- Andl can emulate it quite easily.
Regards
David M Bennett FACS
Andl - A New Database Language - andl.org