rewrite in to exists?

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От
LN Cisneros
Тема
rewrite in to exists?
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20399973.1063861169740.JavaMail.root@rowlf.psp.pas.earthlink.net
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Re: rewrite in to exists? LN Cisneros <lnsea@earthlink.net>
Re: rewrite in to exists? Josh Berkus <josh@agliodbs.com>
Find one record Joseph Bove <jbove@vetstar.com>
Re: Find one record Josh Berkus <josh@agliodbs.com>

I'm on 7.3.4 and this query gets horrible performance.  Is there a way to rewrite it with an exists or some way to get better performance?

select code, id, name, date_of_service
  from tbl
where date_of_service in
      (select date_of_service
         from tbl
        where xxx >= '29800'
          and xxx <= '29909'
          and code = 'XX')
  and client_code = 'XX'
order by  id, date_of_service;

Thanks!



В списке pgsql-performance по дате отправления
От: Christopher Browne
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От: Christopher Kings-Lynne
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Сообщение: Re: rewrite in to exists?
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