Re: double and numeric conversion

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От Pavel Stehule
Тема Re: double and numeric conversion
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Msg-id 162867791003030228n67a4111t4fdd9dc33346efa4@mail.gmail.com
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Ответ на Re: double and numeric conversion  (Yeb Havinga <yebhavinga@gmail.com>)
Ответы Re: double and numeric conversion  (Yeb Havinga <yebhavinga@gmail.com>)
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2010/3/3 Yeb Havinga <yebhavinga@gmail.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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