Date: Sun, 4 Dec 2005 14:36:09 +0100
From: Andreas Kretschmer <akretschmer@spamfence.net>
To: pgsql-sql@postgresql.org
Subject: Re: SQL Statement Help needed
Message-ID: <20051204133609.GA2792@kaufbach.delug.de>
References: <NBBBLNPHAMCFENDFHIDCEEGHEGAA.Michael.Avila.1@sbcglobal.net>
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Michael Avila <Michael.Avila.1@sbcglobal.net> schrieb:

> I am not much of a SQL guru so I am having trouble trying to figure out how
> to format a SQL statement.
> 
> I have a table with members named members. Each member has only 1 record.
> Then I have a table with member telephone numbers in it name
> membertelephones. A member can have more than one telephone number (home,
> work, cell, pager, fax, etc.). I want to print out the telephone numbers of

test=# select * from member;
 id |  name
----+---------
  1 | andreas
  2 | anja
(2 rows)

test=# select * from member_number ;
 id | number
----+--------
  1 | 12345
  1 | 45678
  2 | 232323
(3 rows)


> the members. Is it possible to do it in one SQL statement like with a JOIN
> or something or do I need to get the members and then loop through the
> membertelephones to get the telephone numbers? Is it possible to do a JOIN
> with a table with one record with a table with multiple records?
> 
> SELECT * FROM member 
> 
> SELECT * FROM membertelephone WHERE member_id = the id from the above SELECT

test=# select * from member_number where id = (select id from member
where name = 'andreas');
 id | number
----+--------
  1 | 12345
  1 | 45678
(2 rows)


Btw.: you should use referential integrity between this tables:

t=# \d member_number
      Table "public.member_number"
 Column |       Type        | Modifiers
--------+-------------------+-----------
 id     | integer           |
 number | character varying |
Foreign-key constraints:
    "member_number_id_fkey" FOREIGN KEY (id) REFERENCES member(id)


Btw.: on your mail there was a odd attachment 'winmail.dat'


HTH, Andreas
-- 
Really, I'm not out to destroy Microsoft. That will just be a completely
unintentional side effect. (Linus Torvalds)
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