Ack, listen to Nanni not me. Join order doesn't matter, now that I tested some more :).
Off to drink more coffee, Dan On 3/6/08 8:45 AM, "Dan Rogart" <[EMAIL PROTECTED]> wrote: > Hi, > > > On 3/6/08 8:33 AM, "roger.maynard" <[EMAIL PROTECTED]> wrote: > >> I got 4 tables: >> >> Table A >> | ID | Description1 | >> >> Table B >> | ID | Description2 | >> >> Table C >> | ID | Description3 | >> >> Table D >> | ID | Description4 | >> >> ALL Ids ARE COMMON Values and NONE are MISSING >> >> How can I create >> | ID | Description 1 | Description 2 | Description 3 | Description 4 | >> >> >> >> SELECT a.ID,a.Description1,b.Description2,c.Description3,d.Description4 >> FROM TableA a >> INNER JOIN TableB b ON a.id = b.id >> >> INNER JOIN TableC b ON a.id = c.id >> >> INNER JOIN TableD b ON a.id = d.id >> >> Doesn't give me the result >> >> What am I doing wrong? >> Can I do this? >> >> >> > > You have to do your joins in a chain: A joins to B, B joins to C, C joins to > D, and so on. > > Here's how I made it work in a simple example: > > mysql> create table a (id int, desc1 varchar(255)); > Query OK, 0 rows affected (0.13 sec) > > mysql> create table b (id int, desc2 varchar(255)); > Query OK, 0 rows affected (0.00 sec) > > mysql> create table c (id int, desc3 varchar(255)); > Query OK, 0 rows affected (0.07 sec) > > mysql> create table d (id int, desc4 varchar(255)); > Query OK, 0 rows affected (0.00 sec) > > mysql> insert into a values (1, 'foo'); > Query OK, 1 row affected (0.13 sec) > > mysql> insert into b values (1, 'bar'); > Query OK, 1 row affected (0.00 sec) > > mysql> insert into c values (1, 'fu'); > Query OK, 1 row affected (0.00 sec) > > mysql> insert into d values (1, 'br'); > Query OK, 1 row affected (0.00 sec) > > mysql> select a.id,a.desc1,b.desc2,c.desc3,d.desc4 from a > -> join b on a.id = b.id > -> join c on b.id = c.id > -> join d on c.id = d.id; > +------+-------+-------+-------+-------+ > | id | desc1 | desc2 | desc3 | desc4 | > +------+-------+-------+-------+-------+ > | 1 | foo | bar | fu | br | > +------+-------+-------+-------+-------+ > > Hope that helps, > > Dan > -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
