带distinct / count的简单sql查询

Question

从测试中选择*;

+--------+------+  
| name   | age  |  
+--------+------+  
| asif   |   20 |  
| mithun |   20 |  
| vinod  |   21 |  
+--------+------+

我想要o / p如下

age count
20   2
21   1

Answer 1

你能试试吗？

SELECT age,count(age) as count from test GROUP BY age