我有一个事件表的形式:MYSQL计数行,直到最后一个不同的行
| User | Event | Date |
| User A | Failed Log In | ... |
| User A | Failed Log In | ... |
| User B | Failed Log In | |
| User A | Successful Log In | |
| User B | Successful Log In | |
我想要做的是计算每个用户所有的“失败日志插件”,因为最后'成功登录',所以我可以创建一个视图的形式:
| User | Failed Log in attempts |
| User A | 2 |
| User B | 1 |
这是可能在SQL中做?或者我需要将这个逻辑拉入我的应用程序?
我们必须假设你的表有一个ID或日期/时间栏指定排序。 –
@GordonLinoff是的,谢谢你指出 – Edd