hello,
i have seen many ecommerce site where they have only one categoyry table and store all level of category with parent child id table structure is as follow
| ID |
ParentID |
CAtegoryName |
| 1 |
0 |
Computer |
| 2 |
0 |
Camera |
| 3 |
1 |
HP |
| 4 |
3 |
Pentium 4 |
| 5 |
4 |
Gaming |
out put
| Dropdown fill result |
| Computer |
| Computer > HP |
| Computer > HP >Pentium |
| Computer > HP >Pentium>Gaming |
| Camera |
how to achive this in sql the level of category can be unlimited
so it should have recursive to list down level recursively in sql
pls advice