Question

Please masters, I have three table, that I need to select data from using a LEFT JOIN;
and that I need to order by a field q (that exists in table3) but only where state = 1 (that exists also in table3).

I tried this but it doesn’t work :

SELECT * FROM table 1
         LEFT JOIN table2 ON x = y
         LEFT JOIN table3 ON z=w
         WHERE w = 1
         ORDER BY q IN ( SELECT q FROM table3 WHERE state = 1);

Please any suggestions ?

Answer 1

How abt this:

SELECT * FROM table 1
         LEFT JOIN table2 ON x = y
         LEFT JOIN table3 ON z=w
         WHERE w = 1
         ORDER BY case when state=1 then 0 else 1 end,q