UNION syntax in Cakephp

Question

Anyone knows a good way to make UNION query in CakePHP? I would like to avoid using $this->query();.

With two tables t1, t2:

SELECT *         


        

Answer 1

Use a view, then select from that:

create view my_union as
SELECT * FROM t1
LEFT JOIN t2 ON t1.id = t2.id
LEFT JOIN t3 ON t2.id = t3.id
UNION
SELECT * FROM t1
RIGHT JOIN t2 ON t1.id = t2.id
LEFT JOIN t3 ON t2.id = t3.id
UNION
SELECT * FROM t1
RIGHT JOIN t2 ON t1.id = t2.id
RIGHT JOIN t3 ON t2.id = t3.id

In your code:

select * from my_union