根据父类别显示父类别,然后显示子类别,然后显示每个子类别的产品项目名称,数量和价格以及每个子类别产品总和在第四 我要这样
| (parent Category Name) TEST | child Cat |Qty | Price |
| -------- | ----------| | |
| Speakers | Kit |2 |total=300|
| Lights | |4 | |
| TEST2 (another Parent Cat | ----------| | |
| product 3 | Kit2 |5 |total=400|
| Lights 3 | |8 | |