Re: Speeding up loops in pl/pgsql function
| От | Reuven M. Lerner |
|---|---|
| Тема | Re: Speeding up loops in pl/pgsql function |
| Дата | |
| Msg-id | 4DDD4E57.7070800@lerner.co.il обсуждение исходный текст |
| Ответ на | Speeding up loops in pl/pgsql function ("Reuven M. Lerner" <reuven@lerner.co.il>) |
| Ответы |
Re: Speeding up loops in pl/pgsql function
Re: Speeding up loops in pl/pgsql function |
| Список | pgsql-performance |
Hi, Alex. You wrote:
> Have you tried something like:
> SELECT encode(regexp_replace('141142143', '(\d{3})', '\\\1',
> 'g')::bytea, 'escape');
Hmm, forgot about regexp_replace. It might do the trick, but without a
full-blown eval that I can run on the replacement side, it'll be a bit
more challenging. But that's a good direction to consider, for sure.
> I think select E'\XXX' is what you are looking for (per the fine
> manual: http://www.postgresql.org/docs/current/static/datatype-binary.html)
I didn't think that I could (easily) build a string like that from
digits in a variable or a column, but I'll poke around and see if it can
work.
Thanks,
Reuven
--
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