连接房地产的4个MySql表

我有4个MySql表，房地产连接在一起，我正在formu上工作，根据（价格、空间、房间等）过滤结果 有人能帮我找到一个好方法吗？我不是MySql的初学者，但是4个表的干净解决方案对我的技能来说有点太多了。谢谢你们

我试过这个：

SELECT 
`immos_companies`.id AS company,
`immos_companies_objects`.id AS object,
`immos_companies_objects_floors`.id AS floor,
`immos_companies_objects_floors_flats`.id AS flat 
FROM 
`immos_companies`,
`immos_companies_objects`,
`immos_companies_objects_floors`,
`immos_companies_objects_floors_flats`
WHERE 
`immos_companies_objects_floors_flats`.pid = `immos_companies_objects_floors`.id 
AND
`immos_companies_objects`.pid = `immos_companies`.id 
AND 
`immos_companies`.added IS NOT NULL
AND
`immos_companies_objects`.added IS NOT NULL
AND
`immos_companies_objects_floors`.added IS NOT NULL
AND
`immos_companies_objects_floors_flats`.added IS NOT NULL