Question

我有两个表'user_detail'和产品表

  'user_detail' 
   id    email         membership
    1    x@gmail.com   Premium
    2    y@gmail.com   Free
    3    z@gmail.com   Free
    4    a@gmail.com   Premium
    5    c@gmail.com   Free

  'product' 
   id    email       Status    Catgory       Name   
    1    x@gmail.com Approved  Agriculture   Seed
    2    y@gmail.com Approved  Agriculture   Grain
    3    z@gmail.com Approved  Agriculture   Malt
    4    a@gmail.com Approved  Agriculture   Fruit
    5    c@gmail.com Approved  Mobile        iphone

告诉我查询我如何能够实现这个目标我希望显示这样的结果

批准的高级usr产品显示并显示免费的usr数据意味着我想要像这样的数据

    id Membership   email       Status    Catgory       Name  
    1   premium   x@gmail.com Approved  Agriculture   Seed   
    4   premium   a@gmail.com Approved  Agriculture   Fruit   
    2   free      y@gmail.com Approved  Agriculture   Grain   
    3   free      z@gmail.com Approved  Agriculture   Malt    
    pls help me to sort my problm ...

Answer 1

您可以在email列上加入两个表格，如

select ud.id,
ud.email,
p.Status,
p.Catgory,
p.Name,
ud.membership
from user_detail ud 
join product p on ud.email = p.email
order by ud.membership desc;

Answer 2

SELECT * FROM user_detail LEFT JOIN product ON product.email = user_detail.email;

如何显示数据php mysql premium到免费会员数据

2 个答案: