Re: noobie join question

On Mon, 2015-05-11 at 06:46 -0400, Steve Clark wrote:

Hi List,
I am having trouble trying to figure out
how to get the result listed at the bottom.

I have 3 tables units, types of units which has a description of the units,
and a table that list associations of the units. I can't figure out
how to do the proper joins. Any pointers would be appreciated.

SELECT  us.udevice, ts.descr, ud.udevice, td.descr FROM  assoc AS a       LEFT JOIN units AS us          ON a.src_id = us.uid       LEFT JOIN types AS ts          ON us.utype = ts.id       LEFT JOIN units AS ud          ON a.dest_id = ud.uid       LEFT JOIN types AS td          ON ud.utype = td.id;