选择SQL查询

Question

我有一个表Table1，其数据如下：

User    Department       Location      Jan        Feb              
-----------------------------------------------------
P1        Admin          IND           1          0
P2        Admin          IND           1          1
P3        Admin          US            0          1
P1        HR             UK            1          0
P2        HR             UK            0          1
P1       Admin           AUS           1          1
P1       Admin           AUS           1          0

我需要从这个表中获取数据，如：

Department            Jan                     Feb
-------------------------------------------------
Admin                 2                       3
HR                    1                       1

请帮我解决这个问题。

Answer 1

假设＆＃34; 2 3＆＃34;是一个拼写错误，你实际上是指管理员是＆＃34; 4 3＆＃34;，查询是：

SELECT Department,
    COUNT(CASE WHEN Jan = 1 THEN 1 END) AS Jan,
    COUNT(CASE WHEN Feb = 1 THEN 1 END) AS Feb
FROM Table1
GROUP BY Department;