Answer / Satish Singh

"rownum is a pseudocolumn in SQL/PLSQL that returns the sequential number of each row returned by a query. rowid is a unique identifier for each row in a table, it provides direct access to specific rows."

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ename empno deptno amar 1 10 akbar 2 20 anthonny 3 30 jonathan 4 40 write a procedure to dispaly the column values ina row separated by a deleimiter eg - input - select ename from emp '|' output - amar|akbar|anthony|jonathan input - select empno from emp '@' o/p - 1@2@3@4 input - select deptno from emp '/' o/p - 10/20/30/40 Pls answer this questn.

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