Re: What is the quickest query in the database?

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От Medi Montaseri
Тема Re: What is the quickest query in the database?
Дата
Msg-id 3E5564D5.8090503@intransa.com
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Ответ на Re: What is the quickest query in the database?  (Jonathan Bartlett <johnnyb@eskimo.com>)
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It sounds like the caller is simply trying to see if the engine is up
and operational.
If that is the case, then just connect, disconnect.

Jonathan Bartlett wrote:

>Might select NULL; be faster, since the number doesn't have to be parsed,
>and null is probably a keyword?
>
>Jon
>
>On Thu, 20 Feb 2003, Tino Wildenhain wrote:
>
>
>
>>Hi P G,
>>
>>On Thu, 20 Feb 2003 09:52:07 -0800 (PST)
>>P G <pg_dba@yahoo.com> wrote:
>>
>>
>>
>>>What is the quickest and least intrusive query in the
>>>database that will always succeed?
>>>
>>>
>>select 1;
>>
>>:o)
>>
>>Regards
>>Tino
>>
>>
>>
>>
>>>select current_user;
>>>
>>>-- OR --
>>>
>>>select datname from pg_database where datname =
>>>'some_database';
>>>
>>>Or would it be something else?
>>>
>>>TIA.
>>>
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>>
>
>
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