Re: Support plpgsql multi-range in conditional control

Hi

čt 19. 1. 2023 v 10:23 odesílatel 2903807914(at)qq(dot)com <2903807914(at)qq(dot)com>
napsal:

> Dear hackers, my good friend Hou Jiaxing and I have implemented a version
> of the code that supports multiple integer range conditions in the in
> condition control of the for loop statement in the plpgsql procedural
> language. A typical example is as follows:
>
> postgres=# do $$
> declare
> i int := 10;
> begin
> for i in 1..10 by 3, reverse i+10..i+1 by 3 loop
> raise info '%', i;
> end loop;
> end $$;
> INFO: 1
> INFO: 4
> INFO: 7
> INFO: 10
> INFO: 20
> INFO: 17
> INFO: 14
> INFO: 11
> do
> postgres=#
>
> Hope to get your feedback, thank you!
>

I don't like it. The original design of ADA language is to be a safe and
simple language. Proposed design is in 100% inversion.

What use case it should to support?

Regards

Pavel

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