Re: Different handling of PL/pgSQL for-loop variables in 8.3.7 vs. 8.2.7 ???

2009/6/11 hubert depesz lubaczewski <depesz@depesz.com>:
> On Wed, Jun 10, 2009 at 04:51:44PM -0400, Tom Lane wrote:
>> It's the new implementation.  Depending on unspecified implementation
>> details is a good way to have broken code.
>
> i'm not sure if it's good change. there might be perfectly good reasons
> to increment idx from within loop.
>

generally - modification of cycle's control variable isn't good
technique, because it's should be broken by some optimizations. When
you would to modify this some variables, then use "while-loop"
instead.

regards
Pavel Stehule

> Best regards,
>
> depesz
>
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