Re: any way for ORDER BY x to imply NULLS FIRST in 8.3?
От | rihad |
---|---|
Тема | Re: any way for ORDER BY x to imply NULLS FIRST in 8.3? |
Дата | |
Msg-id | 473441E1.8040300@mail.ru обсуждение исходный текст |
Ответ на | any way for ORDER BY x to imply NULLS FIRST in 8.3? (rihad <rihad@mail.ru>) |
Ответы |
Re: any way for ORDER BY x to imply NULLS FIRST in 8.3?
Re: any way for ORDER BY x to imply NULLS FIRST in 8.3? Re: any way for ORDER BY x to imply NULLS FIRST in 8.3? |
Список | pgsql-general |
> Em Wednesday 07 November 2007 13:54:32 rihad escreveu: >> >> May I, as an outsider, comment? :) I really think of ASC NULLS FIRST >> (and DESC NULLS LAST) as the way to go. Imagine a last_login column that >> sorts users that have not logged in as the most recently logged in, >> which is not very intuitive. I vote for sort_nulls_first defaulting to >> false in order not to break bc. > > But then, when ordering by login date, you should use COALESCE and infinity > for them > (http://www.postgresql.org/docs/8.2/interactive/datatype-datetime.html). It's not an easy thing to do with for example Propel 1.2 ORM (written in PHP): $criteria->addDescendingOrderByColumn(myPeer::LAST_LOGIN); // no place to shove database-specific attributes in. which was my main point.
В списке pgsql-general по дате отправления: