假设我有以下项目:
ID Category Name
1 Fruit Banana
2 Car Mescedes
3 Fruit Blackberry
4 Fruit Mango
5 Car Lexus
6 Fruit Melon
7 Car BMW
8 Car Toyota
我想将它们分组Category
并只取每个的前 3 项Category
。是否可以?
我期望输出:
ID Category Name
1 Fruit Banana
3 Fruit Blackberry
4 Fruit Mango
2 Car Mescedes
5 Car Lexus
7 Car BMW
任何帮助将不胜感激!