Re: What is the quickest query in the database?
От | Medi Montaseri |
---|---|
Тема | Re: What is the quickest query in the database? |
Дата | |
Msg-id | 3E5564D5.8090503@intransa.com обсуждение исходный текст |
Ответ на | Re: What is the quickest query in the database? (Jonathan Bartlett <johnnyb@eskimo.com>) |
Список | pgsql-general |
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. >>> >>>__________________________________________________ >>>Do you Yahoo!? >>>Yahoo! Tax Center - forms, calculators, tips, more >>>http://taxes.yahoo.com/ >>> >>>---------------------------(end of broadcast)--------------------------- >>>TIP 3: if posting/reading through Usenet, please send an appropriate >>>subscribe-nomail command to majordomo@postgresql.org so that your >>>message can get through to the mailing list cleanly >>> >>> >>> >>---------------------------(end of broadcast)--------------------------- >>TIP 5: Have you checked our extensive FAQ? >> >>http://www.postgresql.org/users-lounge/docs/faq.html >> >> >> > > >---------------------------(end of broadcast)--------------------------- >TIP 3: if posting/reading through Usenet, please send an appropriate >subscribe-nomail command to majordomo@postgresql.org so that your >message can get through to the mailing list cleanly > >
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