Re: add modulo (%) operator to pgbench

On Mon, Aug 4, 2014 at 5:20 AM, Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr> wrote:
>> This patch is pretty trivial.
> Another slightly less trivial but more useful version.
>
> The issue is that there are 3 definitions of modulo, two of which are fine
> (Knuth floored division and Euclidian), and the last one much less useful.
> Alas, C (%) & SQL (MOD) choose the bad definition:-( I really need any of
> the other two. The attached patch adds all versions, with "%" and "mod"
> consistent with their C and SQL unfortunate counterparts, and "fmod" and
> "emod" the sane ones.

Three different modulo operators seems like a lot for a language that
doesn't even have a real expression syntax, but I'll yield to whatever
the consensus is on this one.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
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