一列等于x或y的SQL查询计数内容

Question

我有一列包含X或Y的列。我该如何创建一个将每个列如下的查询？

Example of Input
-----------------
X
X
Y

所需的输出

CountX  |  CountY
-----------------
2       |  1

Answer 1

select sum(iif(input = 'X', 1, 0)) as countX,
       sum(iif(input = 'Y', 1, 0)) as countY
from your_table