How to find out hierchy of employee?

Hai,
I have proper knowledge in Oracle 9i as wel as PostgreSQL.
I have written a query in Oracle-SQL like the following...

select level,substr(lpad(' ',level*2)||ename,1,20) name from emp
start with ename='KING'
connect by prior empno=MGR;
/
LEVEL NAME
---------- -----------
1 KING
2 JONES
3 SCOTT
4 ADAMS
3 FORD
4 SMITH
2 BLAKE
3 ALLEN
3 WARD
3 MARTIN

Now, i need same result in PostgreSQL.Is there any possiblity to find
out the heirchy of employees?

Thanks & Regards

Vivekananda.R | Software Engineer

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