Question

我的表是：

tblProduct

male| female| Brand_ID

和

tblBrands

Brand_ID| Brand_Name

我的查询在这里：

Select distinct   
    a.Male, a.Female, b.Brand_Name 
from 
    tblProduct as a 
inner join
    tblBrands as b on b.Brand_ID = a.Brand_ID

此查询返回此输出：

Male    Female  Brand_Name
----------------------------------
 1       0        ABC
 0       1        ABC
 1       0        ABC
 1       0        PQR
 1       0        PQR
 0       1        PQR
 0       1        XYZ
 0       1        XYZ

但是我想要下面显示的输出 - 我应该怎样做才能得到它？

Male    Female  Brand_Name
 ----------------------------------
 1       1        ABC
 1       1        PQR
 0       1        XYZ

检查是否品牌XYZ是男性还是女性如果男性位是真，女性位是真是显示XYZ 1 1或者如果女性或男性存在根据显示XYZ 1 0或XYZ 0 1 < / p>

Answer 1

一个简单的GROUP BY子句将解决您的问题

Select   
  Max(cast(a.Male as int)) as Male  , 
  Max(cast(a.Female as int)) as Female,
  b.Brand_Name 
from tblProduct as a inner join
tblBrands as b on b.Brand_ID = a.Brand_ID
group by b.Brand_Name

Answer 2

由于您提到Male和Female列的类型为bit，因此您可以编写查询，不需要 {{1} }和MAX函数：

CAST

SQL Server不同查询，在同一个表中有两列

2 个答案: