【SQL 联结】left join 多个表

select a.man_id,man_name,d.sex_name,zw_name,c.money
 from man as a 
      left join zw as b on a.zw_id=b.zw_id 
      left join gz as c on a.man_id=c.man_id 
      left join xb as d on c.sex_id=d.sex_id