Re: prefer (+) oracle notation
От | Herbert Liechti |
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Тема | Re: prefer (+) oracle notation |
Дата | |
Msg-id | 39EF74AF.59ED468@thinx.ch обсуждение исходный текст |
Ответ на | prefer (+) oracle notation ("Edmar Wiggers" <edmar@brasmap.com>) |
Ответы |
Re: prefer (+) oracle notation
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Список | pgsql-general |
Tom Lane wrote: > > "Edmar Wiggers" <edmar@brasmap.com> writes: > > I'm not sure about the standard, but I really like Oracle's notation for > > foreign keys: > > > select a.item_number, b.group_code_description > > from items a, group_codes b > > where a.group_code = b.group_code (+); > > I beg to differ --- IMHO, Oracle's notation is brain dead. I agree. In my opinion the best syntax for outer joins was brought up by informix. Ex: SELECT a.f1, b.f1, c.f1 FROM a, OUTER( b, OUTER c ) WHERE a.key = b.fkkey AND b.key = c.fkkey Where b is outer from a and c outer from b. Precedence and hierachical order is given by the parenthesis. Same example FROM a, OUTER ( b, c) b and c are outer from a. I find this syntax clear and logic without any danger of missinterpretation Best regards Herbie
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