complex MySQL Order by not working

Posted by Les Reynolds on Stack Overflow See other posts from Stack Overflow or by Les Reynolds
Published on 2009-12-07T13:03:10Z Indexed on 2010/04/18 3:03 UTC
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Here is the select statement I'm using. The problem happens with the sorting. When it is like below, it only sorts by t2.userdb_user_first_name, doesn't matter if I put that first or second. When I remove that, it sorts just fine by the displayorder field value pair. So I know that part is working, but somehow the combination of the two causes the first_name to override it. What I want is for the records to be sorted by displayorder first, and then first_name within that.

SELECT t1.userdb_id
FROM default_en_userdbelements as t1
  INNER JOIN default_en_userdb AS t2 ON t1.userdb_id = t2.userdb_id
WHERE t1.userdbelements_field_name = 'newproject'
  AND t1.userdbelements_field_value = 'no'
  AND t2.userdb_user_first_name!='Default'
ORDER BY
  (t1.userdbelements_field_name = 'displayorder' AND t1.userdbelements_field_value),
  t2.userdb_user_first_name;

Edit: here is what I want to accomplish. I want to list the users (that are not new projects) from the userdb table, along with the details about the users that is stored in userdbelements. And I want that to be sorted first by userdbelements.displayorder, then by userdb.first_name. I hope that makes sense? Thanks for the really quick help!

Edit: Sorry for disappearing, here is some sample data

userdbelements

userdbelements_id   userdbelements_field_name   userdbelements_field_value  userdb_id
647 heat        1
648 displayorder    1 - Sponsored   1
645 condofees       1

userdb

userdb_id   userdb_user_name    userdb_emailaddress userdb_user_first_name  userdb_user_last_name
10  harbourlights   [email protected]   Harbourlights   1237 Northshore Blvd, Burlington
11  harbourview [email protected]  Harbourview 415 Locust Street, Burlington
12  thebalmoral [email protected]  The Balmoral    2075 & 2085 Amherst Heights Drive, Burlington

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