MySQL的不同和计数

Question

我的表是这样的：

+------+-------+ 
| user | data | 
+------+-------+ 
| 1 | a | 
+------+-------+ 
| 1 | b | 
+------+-------+ 
| 2 | c | 
+------+-------+ 

我需要这样的：

Array 
(
    [1] => 2 
    [2] => 1 
) 

获得唯一的用户并计算数据行的情况下，任何想法？

我已经试过与此查询：

SELECT DISTINCT user from table ORDER BY ID DESC 

Answer 1

你应该使用GROUP BY这一点。从表 GROUP

SELECT `User`, COUNT(data) TotalCount 
FROM tableName 
GROUP BY `User` 
ORDER BY TotalCount DESC 

Answer 2

SELECT COUNT（*）BY用户

（未测试）