From: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
---|---|
To: | Yeb Havinga <yebhavinga(at)gmail(dot)com> |
Cc: | Theo Schlossnagle <jesus(at)omniti(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-development Development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: double and numeric conversion |
Date: | 2010-03-03 10:28:15 |
Message-ID: | 162867791003030228n67a4111t4fdd9dc33346efa4@mail.gmail.com |
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Lists: | pgsql-hackers |
2010/3/3 Yeb Havinga <yebhavinga(at)gmail(dot)com>:
> Theo Schlossnagle wrote:
>>
>> I didn't look deeply at the postgres internals to see if there was a way
>> to do double -> numeric and integer-types -> numeric without intermediary
>> string format. If that sort of thing is easy to leverage, I'd be happy to
>> share the code.
>>
>
> I think your code could be valuable for postgres on the fact alone that it
> is almost twice as fast, and probably easy to integrate and unit test. We
> make heavy use of the numeric data type, so I'm very interested!
I did some test and numeric->double is about 5% faster than
numeric->string->double (on my PC)
Regards
Pavel Stehule
>
> regards
> Yeb Havinga
>
>
>
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