MS Access：一行中多个特定值的计数

Question

我在MS Access数据库（Office 2013）中有一个表：

Table1
ID  ACC_YEAR    PROGRESS
1   2008-09     IP
2   2008-09     IP
3   2008-09     C
4   2009-10     IP

“ACC_YEAR”是一个文本字段，“PROGRESS”字段可能有四个可能的值：IP / C / NS / UCS。

现在我希望有一个明智的＆amp; PROGRESS明智计算报告如下：

ACC_YEAR    IP     C     NS     UCS   PROGRESS_TOTAL
2008-09     2      1     0      0     3
2009-10     2      1     0      0     3

任何人都可以帮我为我构建SQL。

提前致谢。

Answer 1

一种方法是条件聚合：

select acc_year,
       sum(iif(Progress = "IP", 1, 0)) as IP,
       sum(iif(Progress = "C", 1, 0)) as C,
       sum(iif(Progress = "NS", 1, 0)) as NS,
       sum(iif(Progress = "UCS", 1, 0)) as UCS,
       count(*)
from table
group by acc_year
order by acc_year;