Re: add modulo (%) operator to pgbench
| От | Mitsumasa KONDO |
|---|---|
| Тема | Re: add modulo (%) operator to pgbench |
| Дата | |
| Msg-id | CADupcHX-mXEkZKgFu3zHtu4p3rC-5fyWK+i=O1Sqff1=erKKeA@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: add modulo (%) operator to pgbench (Fabien COELHO <coelho@cri.ensmp.fr>) |
| Список | pgsql-hackers |
2014-09-11 15:47 GMT+09:00 Fabien COELHO <coelho@cri.ensmp.fr>:
Because if we use the negative value in modulo calculation, it just set negative value as both positive values,
Hello Robert,I am not objecting to the functionality; I'm objecting to bolting on
ad-hoc operators one at a time. I think an expression syntax would
let us do this in a much more scalable way. If I had time, I'd go do
that, but I don't. We could add abs(x) and hash(x) and it would all
be grand.
Ok. I do agree that an expression syntax would be great!
Yes, it's not bad.
However, will we need some method of modulo calculation?
I don't think so much. I think most intuitive modulo calculation method is floor modulo,
it is easy to expect the result than others. This strong point is good for benchmark script users.
But I don't have any strong opinion about this patch, not blocking:)
Best Regards
--
Mistumasa KONDO
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