From: | Ludek Finstrle <xfinstrl(at)informatics(dot)muni(dot)cz> |
---|---|
To: | pgsql-sql(at)postgresql(dot)org |
Subject: | LEFT OUTER JOIN problem |
Date: | 2001-09-21 13:32:00 |
Message-ID: | 20010921153200.M19935@anxur.fi.muni.cz |
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Thread: | |
Lists: | pgsql-sql |
Hello,
I have this problem (maybe only in my head ;o)):
table1:
-------
id | name
---------
1 | 'blabla'
2 | 'arrrgh'
table2:
-------
id | table1_id | name
---------------------
1 | 1 | 'hello'
table3:
-------
id | table2_id | name
---------------------
SELECT * FROM table1 LEFT OUTER JOIN table2 ON (table1.id = table2.table1_id)
LEFT OUTER JOIN table3 ON (table2.id = table3.table2_id);
This select return me only one row:
1,'blabla',1,1,'hello',NULL,NULL,NULL
But I think it may return two rows:
1,'blabla',1,1,'hello',NULL,NULL,NULL
2,'arrrgh',NULL,NULL,NULL,NULL,NULL,NULL
Where is the problem (in my head or in postgres)? Do you know what select
statement return me what I want?
Please reply to my address (xfinstrl(at)fi(dot)muni(dot)cz) as I'm not in list.
Thanks
Luf
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