Re: DONT_CARE Aggregate
От | Robert James |
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Тема | Re: DONT_CARE Aggregate |
Дата | |
Msg-id | CAGYyBggdErerANnvR9Bqrk8ORmSHnZpfAVz=Xg+XfEeU6b6mpw@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: DONT_CARE Aggregate (Sergey Konoplev <gray.ru@gmail.com>) |
Ответы |
Re: DONT_CARE Aggregate
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Список | pgsql-general |
Sergey - That's an interesting option, but I'm not sure how to use it as an aggregate. Could you give an example? On 12/20/12, Sergey Konoplev <gray.ru@gmail.com> wrote: > On Wed, Dec 19, 2012 at 5:28 PM, Robert James <srobertjames@gmail.com> > wrote: >> And even better: >> An aggregate which will return the first instance that meets a certain >> predicate? > > Take a look at DISTINCT ON. > > -- > Sergey Konoplev > Database and Software Architect > http://www.linkedin.com/in/grayhemp > > Phones: > USA +1 415 867 9984 > Russia, Moscow +7 901 903 0499 > Russia, Krasnodar +7 988 888 1979 > > Skype: gray-hemp > Jabber: gray.ru@gmail.com >
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