How to Get child of Parent in mysql?

Question

I have a table below. I want to write mySql Query that can return all the children against the parent Id. ie against 0 it should return (1,2,3,4) and against 1 it should return (3,4).

I am able to do this recursive call in SQL server using "with" clause, but i want to do this same thing in MySQL.

ParentId GroupID
0 | 0
0 | 1
0 | 2
1 | 3
3 | 4

Any help in this regard is highly appreciated.

Answer 1

If this is an arbitrary depth hierarchy (you want ancestor instead of parent), then you can't do this directly in SQL. Google for "sql hierarchical queries" to find some possible workarounds.