On Fri, Nov 19, 2021 at 9:38 AM Marcos Pegoraro <mar...@f10.com.br> wrote:

> If nothing was changed, why create a new record, append data to wal, set
> old record as deleted, etc, etc ?
>

Because it takes resources to determine that nothing changed.  If you want
to opt-in into that there is even an extension trigger that makes doing so
fairly simple.  But it's off by default because the typical case is that
people don't frequently perform no-op updates so why eat the expense.

David J.

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