OUTER JOINS in 6.4.2?? Work around??

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От Matthew Hagerty
Тема OUTER JOINS in 6.4.2?? Work around??
Дата
Msg-id 4.1.19990224201140.009a9820@mail.venux.net
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Список pgsql-sql
Greetings,

I know this is probably asked a thousand times, but I cannot find a
reference anywhere on the web site.  If there is one, please point me there...

Is it possible to do LEFT and RIGHT OUTER JOINS?  i.e.

SELECT * FROM foo LEFT OUTER JOIN bar ON foo.id=bar.id;

All I could find on the web site was that PostgreSQL supports a subset of
SQL92 and SQL3.  Is there someplace that tells what that subset is?

Maybe I don't need the join if there is some other way...  I'm trying to
work out a query to give me one row from the many side of a 1-to-many
relationship for each row in the one side; basically making a 1-to-1 by
ignoring extra rows in the many table.  For instance, a table of customers
(the one table) have phone numbers (the many table).  I want to display a
list of customers with a phone number, but only one number regardless of
how many phone numbers there are.

Any insight would be greatly appreciated.

Thanks,
Matthew


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