Andreas Pflug <pgadmin(at)pse-consulting(dot)de> writes:
> I wonder why you are suggesting workarounds for features that other
> databases provide.
The fact that other databases provide 'em doesn't make them good ideas.
In particular, writing a trigger that assumes that only the fields
changed by the original UPDATE syntax have really changed seems like an
excellent way to shoot yourself in the foot. Why should we go out of
our way to provide support for error-prone programming techniques?
regards, tom lane