Re: strange evaluation Window function and SRF functions?

Поиск
Список
Период
Сортировка
От Thom Brown
Тема Re: strange evaluation Window function and SRF functions?
Дата
Msg-id CAA-aLv5JQqzOgPrxR0JTp-nctw6jpBKzsKGc+TnqKOpN2mjVDg@mail.gmail.com
обсуждение исходный текст
Ответ на strange evaluation Window function and SRF functions?  (Pavel Stehule <pavel.stehule@gmail.com>)
Ответы Re: strange evaluation Window function and SRF functions?  (David Johnston <polobo@yahoo.com>)
Re: strange evaluation Window function and SRF functions?  (Pavel Stehule <pavel.stehule@gmail.com>)
Список pgsql-hackers
Дерево обсуждения
On 30 July 2012 17:19, Pavel Stehule <pavel.stehule@gmail.com> wrote:
Hello

I seen nice trick based on window function http://stackoverflow.com/questions/11700930/how-can-i-trim-a-text-array-in-postgresql

but isn't it example of wrong evaluation? Result of row_number is not correct

Looks right to me.  I guess the way to get the row_number they're after out of the result set would involve changing OVER () to OVER (ORDER BY unnest(myTextArrayColumn))

--
Thom

В списке pgsql-hackers по дате отправления:

Предыдущее
От: Tom Lane
Дата:
Сообщение: Re: strange evaluation Window function and SRF functions?
Следующее
От: David Johnston
Дата:
Сообщение: Re: strange evaluation Window function and SRF functions?