Dear all
Following is my db table
student_id student_code student_parent_id student_name
1 11 0 a
2 111 1 b
3 1111 2 c
4 11111 3 d
I want to generate following op
student_id student_code student_parent_id student_name Hierarchy
1 11 0 a 11
2 &nbs ...
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