Re: Seqscan rather than Index

От: Tom Lane
Тема: Re: Seqscan rather than Index
Дата: ,
Msg-id: 27633.1103344657@sss.pgh.pa.us
(см: обсуждение, исходный текст)
Ответ на: Re: Seqscan rather than Index  (Frank Wiles)
Ответы: Re: Seqscan rather than Index  (Frank Wiles)
Список: pgsql-performance

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Seqscan rather than Index  (Jon Anderson, )
 Re: Seqscan rather than Index  (Tom Lane, )
 Re: Seqscan rather than Index  (David Brown, )
  Re: Seqscan rather than Index  (Richard Huxton, )
   Re: Seqscan rather than Index  (Greg Stark, )
    Re: Seqscan rather than Index  (Tom Lane, )
     Re: Seqscan rather than Index  (Greg Stark, )
      Re: Seqscan rather than Index  (Tom Lane, )
    Re: Seqscan rather than Index  ("Steinar H. Gunderson", )
     Re: Seqscan rather than Index  ("Steinar H. Gunderson", )
      Re: Seqscan rather than Index  (Frank Wiles, )
       Re: Seqscan rather than Index  ("Steinar H. Gunderson", )
       Re: Seqscan rather than Index  (Tom Lane, )
        Re: Seqscan rather than Index  (Frank Wiles, )
     Re: Seqscan rather than Index  (Bruno Wolff III, )
      Re: Seqscan rather than Index  ("Steinar H. Gunderson", )

Frank Wiles <> writes:
>   I've also seen a huge difference between select count(*) and
>   select count(1) in older versions,

That must have been before my time, ie, pre-6.4 or so.  There is
certainly zero difference now.

            regards, tom lane


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