Avoiding ambiguous column errors when using JOIN in MySQL

Question

My query looks like this:

$sql = \"
SELECT u.*, s.*
FROM bands u
inner join statuses s on u.status_id = s.id
WHERE u.status_id = 1
ORDER BY u.band_name\";


        

Answer 1

You'll want to create non conflicting aliases for the id columns;

SELECT u.*, s.*, u.id AS uid, s.id AS sid
FROM bands u
inner join statuses s on u.status_id = s.id
WHERE u.status_id = 1
ORDER BY u.band_name

Then you can pick them out as $row['uid'] and $row['sid'] and still access your other columns as usual. The conflicting id column is also still there, just avoid using it.

Answer 2

add an alias on the same column names. ex,

SELECT u.id UID,....

then you can now retrieve using its alias (eg. UID)