Re: noobie join question

[Steve Clark <sclark@xxxxxxxxxxxxx>]

On 05/11/2015 07:16 AM, Oliver Elphick wrote:

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;

Thanks Oliver - that worked perfectly.

--
Stephen Clark
NetWolves Managed Services, LLC.
Director of Technology
Phone: 813-579-3200
Fax: 813-882-0209
Email: steve.clark@xxxxxxxxxxxxx
http://www.netwolves.com