mysql - 按名称搜索查询计数 1 个字段组

Question

我有一个一直用于我的查询的表，但我似乎无法找到我预期的结果。也许我的查询是错误的。

表尝试

|ID | name | results   
| 1 | Paul | Passed        
| 2 | Paul | Passed   
| 3 | Paul | Failed            
| 4 | John | Failed   
| 5 | John | Passed

结果应该是

name | passed |  Failed  | 
Paul |   2    |    1     |   
John |   1    |    1     |

但我的结果是 4 行。两次显示他们的名字。

这是我的问题

SELECT name,
SUM( results =  "Passed" ) AS passed,
SUM( results = "Failed" ) AS failed
FROM attempts
GROUP BY results, name

Answer 1

只需从 GROUP BY 中删除 results

SELECT name,
SUM( results =  "Passed" ) AS passed,
SUM( results = "Failed" ) AS failed
FROM attempts
GROUP BY name

SQL Fiddle DEMO