SQL Case Condition on joined table

Question

I need to modify this sql using a case condition, i need all of model to echo but only echo tw if the where condition meets. What would be the best way to do this?

SELECT * FROM model
LEFT OUTER JOIN tw
ON model.model_name=tw.model
WHERE tw.completed = 1 AND tw.stock = 0
ORDER BY model.id

Answer 1

I think you simply need to move the where condition to the on clause:

SELECT m.*, t2.*
FROM model m LEFT OUTER JOIN
     tw
     ON m.model_name = tw.model AND
        tw.completed = 1 AND tw.stock = 0
ORDER BY m.id;