On 1/9/17 6:07 PM, Marko Tiikkaja wrote:
> One use case is NEW and OLD in triggers. Checking to see if one or
> the other is set is easier than checking TG_OP. It's also going to
> be faster (probably MUCH faster; IIRC the comparison currently
> happens via SPI).
>
>
> This sounds useless.
I guess you've not written much non-trivial trigger code then... the
amount of code duplication you end up with is quite ridiculous. It's
also a good example of why treating this as an exception and trapping
isn't a good solution either: you can already do that with triggers today.
Being able to check the existence of a variable is a very common idiom
in other languages, so I'm don't see why plpgsql shouldn't have it.
--
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
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