Re: explicit joins vs implicit joins
От | Bruno Wolff III |
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Тема | Re: explicit joins vs implicit joins |
Дата | |
Msg-id | 20030619104402.GC10782@wolff.to обсуждение исходный текст |
Ответ на | explicit joins vs implicit joins (culley harrelson <culley@fastmail.fm>) |
Список | pgsql-general |
On Thu, Jun 19, 2003 at 09:52:26 +0200, culley harrelson <culley@fastmail.fm> wrote: > Once upon a time when I taught myself sql I learned the explicit join > syntax-- I have never really used the where clause to create joins. > With this style of sql I have been building/maintaining a > postgresql-centric web application since postgresql 7.0 and now I am > learning that by writing my sql in this fashion I am constricting the > planner. After reading this: > > http://marc.theaimsgroup.com/?l=postgresql-general&m=105551123915183&w=2 > > I am wondering if things are going to change in 7.4? Or should I switch > to placing joins in the where clause when I can? I don't want to have > to worry about my join order-- I would prefer to let the planner do its > thing 95% of the time. Currently using the explicit join syntax forces join order. In 7.4 it won't (unless you change a setting). So for you, 7.4 should be an improvement.
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