Re: Problem with joining two tables

am  Wed, dem 05.12.2007, um 14:42:32 +0100 mailte Przemyslaw Bojczuk folgendes:
> Hello!
>
> I have a problem joining two tables. I tried various types of join and
> none seems to work as I expect
>
> Table 1:
>
>  id | stuff
> -----------
>   1 | sth1
>   2 | sth2
>   3 | sth3
>   4 | sth4
>   5 | sth5
>  .. | ...
>
> Table 2:
>
>  id | desc  | etc
> ------------------
>   1 | desc1 | etc1
>   2 | desc2 | etc2
>   2 | desc3 | etc3
>   2 | desc4 | etc4
>   3 | desc5 | etc5
>     | desc6 | etc6
>   5 | desc7 | etc7
>  .. | ...   | ...
>
> I need something like:
>
>  id | stuff | desc  | etc
> -------------------------
>   1 | sth1  | desc1 | etc1
>   2 | sth2  | desc2 | etc2
>   2 | sth2  | desc3 | etc3
>   2 | sth2  | desc4 | etc4
>   3 | sth3  | desc5 | etc5
>   5 | sth5  | desc7 | etc7
>


Okay, let's try:

first i create your tables like above:

test=*# select * from t1;
 id | stuff
----+-------
  1 | sth1
  2 | sth2
  3 | sth3
  4 | sth4
  5 | sth5
(5 rows)

test=*# select * from t2;
 id |  des  | etc
----+-------+------
  1 | desc1 | etc1
  2 | desc2 | etc2
  2 | desc3 | etc3
  2 | desc4 | etc4
  3 | desc5 | etc5
    | desc6 | etc6
  5 | desc7 | etc7
(7 rows)


And now:

test=*# select t1.id, t1.stuff, t2.des, t2.etc from t1, t2 where t1.id=t2.id;
 id | stuff |  des  | etc
----+-------+-------+------
  1 | sth1  | desc1 | etc1
  2 | sth2  | desc2 | etc2
  2 | sth2  | desc3 | etc3
  2 | sth2  | desc4 | etc4
  3 | sth3  | desc5 | etc5
  5 | sth5  | desc7 | etc7
(6 rows)


is this your expected result?


Andreas
--
Andreas Kretschmer
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