再求一句SQL
这样一个表
ID Name
---------
1 A1
2 A2
3 A3
4 A2
5 A4
6 A6
7 A1
8 A2
9 A4
我想返回 Name字段值是 "A1 ", "A2 ", "A3 "的记录的数量
现在我是分三次做的
SELECT COUNT(*) FROM Table WHERE Name= "A1 "
SELECT COUNT(*) FROM Table WHERE Name= "A2 "
SELECT COUNT(*) FROM Table WHERE Name= "A3 "
现在我想一句SQL,只查询一次就返回，能实现吗?
[解决办法]
Select
SUM(IIF(Name = 'A1 ', 1, 0)) As A1Count,
SUM(IIF(Name = 'A2 ', 1, 0)) As A2Count,
SUM(IIF(Name = 'A3 ', 1, 0)) As A3Count
From
TEST1
