Re: [HACKERS] 64-bit queryId?

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От Michael Paquier
Тема Re: [HACKERS] 64-bit queryId?
Дата
Msg-id CAB7nPqTcj=qxqX=-xOzgLdVofHy4TcRLsafbhwSgVvCFPDp5hQ@mail.gmail.com
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Ответ на Re: [HACKERS] 64-bit queryId?  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Sat, Sep 30, 2017 at 1:34 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Robert Haas <robertmhaas@gmail.com> writes:
>> How about widening the value to uint64?
>
> Doesn't really seem like that would guarantee no collisions.

This moves the possibility of a 25% collision from 50k queries 3.3
billion. Not zero, but safe enough as a minimal change for many years
to come.
-- 
Michael


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