joining the same table twice on different columns

Question

I\'ve got a user table and a complaint table.

The complaint table has the following structure:

[opened_by]   [         


        

Answer 1

Use this query:

SELECT opener.username as opened_by, complaint.complaint_text, closer.username as closed_by
FROM complaint
LEFT JOIN user as opener ON opener.user_id=complaint.opened_by
LEFT JOIN user as closer ON closer.user_id=complaint.closed_by