MYSQL 嵌套子查询的例子

MySQL的嵌套子查询

SELECT sa.area_name,sst.stay_des,sp.* 
FROM
  (SELECT sm.* 
  FROMsys_monitoring sm 
    JOIN sys_orders so ON sm.monitoring_id = so.monitoring_id 
    JOIN sys_dept sd ON sd.dept_id = so.dept_id 
  WHERE sd.dept_id = 1) a 
  JOIN sys_preset sp ON sp.channel = a.channel 
  JOIN sys_stay_t sst ON sp.stay_id = sst.stay_id 
  JOIN sys_preset_scene sps ON sps.scene_id = sp.scene_id 
  JOIN sys_area sa ON sa.area_id = a.area_id 
  WHERE sps.scene_name = '河流'