OUTER JOINs in PostgreSQL - Mailing list pgsql-sql

From Ant9000
Subject OUTER JOINs in PostgreSQL
Date
Msg-id 99060222482601.00588@chomp
Whole thread Raw
Responses Re: [SQL] OUTER JOINs in PostgreSQL
Re: [SQL] OUTER JOINs in PostgreSQL
List pgsql-sql
Hi, I was trying to do an apparently simple task: I have two tables, say

master
id | name
---------
1  | Alpha
2  | Beta
3  | Gamma

detail
-------
id | lastvisit | info
---------------------
1  | Wed Jun 02 19:43:08 1999 CEST | blah blah
1  | Wed Jun 02 19:45:08 1999 CEST | some more blah's


Now, I'd like to list all of the fields of table 'master', together with the
fields lastvisit and info from 'detail' if they have a corresponding value:
ie, I'd like some SQL that gives me

id | name  | lastvisit | info
-----------------------------
1  | Alpha | Wed Jun 02 19:43:08 1999 CEST | blah blah
1  | Alpha | Wed Jun 02 19:45:08 1999 CEST | some more blah's
2  | Beta  |                                                            |
3  | Gamma |                                                            |

The best I was able to obtain is this:

SELECT master.*,detail.lastvisit,detail.info FROM master,detail
WHERE master.id=detail.id
UNION
SELECT *,NULL AS lastvisit,NULL AS info FROM master
WHERE id NOT IN (SELECT id  FROM detail);

which is (at best) unelegant; in MS Access you could do something like

SELECT master.*,detail.lastvisit,detail.info FROM master LEFT JOIN detail
ON master.id=detail.id;

With Oracle, there's an even shorter solution:

SELECT master.*,detail.lastvisit,detail.info FROM master,detail
WHERE master.id=detail.id(+);


Is anything like that available with PostgreSQL?

Thanks in advance,           Ant9000


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