Re: [INTERFACES] outer join in PostgreSql

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От Patrick Welche
Тема Re: [INTERFACES] outer join in PostgreSql
Дата
Msg-id 20010115213653.D8984@quartz.newn.cam.ac.uk
обсуждение исходный текст
Ответ на outer join in PostgreSql  ("Mauricio Hipp Werner" <mhipp@mail.pjud.cl>)
Список pgsql-sql
On Mon, Jan 15, 2001 at 06:16:00PM -0400, Mauricio Hipp Werner wrote:
> I need help, which is the symbol used in postgreSql to carry out the outer
> join.
> 
>  in oracle the is used (+)
> in sybase the is used * and
> in postgreSql?

I don't really understand your question, but from src/test/regress/sql/join.sql
some examples of use are:

--
-- Outer joins
-- Note that OUTER is a noise word
--

SELECT '' AS "xxx", * FROM J1_TBL LEFT OUTER JOIN J2_TBL USING (i);

SELECT '' AS "xxx", * FROM J1_TBL LEFT JOIN J2_TBL USING (i);

SELECT '' AS "xxx", * FROM J1_TBL RIGHT OUTER JOIN J2_TBL USING (i);

SELECT '' AS "xxx", * FROM J1_TBL RIGHT JOIN J2_TBL USING (i);

SELECT '' AS "xxx", * FROM J1_TBL FULL OUTER JOIN J2_TBL USING (i);

SELECT '' AS "xxx", * FROM J1_TBL FULL JOIN J2_TBL USING (i);

SELECT '' AS "xxx", * FROM J1_TBL LEFT JOIN J2_TBL USING (i) WHERE (k = 1);

SELECT '' AS "xxx", * FROM J1_TBL LEFT JOIN J2_TBL USING (i) WHERE (i = 1);


Cheers,

Patrick


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