What are data pump export and import modes?
What is the difference between truncate & delete command?
How to retrieve values from data fields in record variables?
How to select the name of employee who is getting maximum sal with out using subquery
State the various uses of dbcc command?
What are the different oracle database objects?
What is a deadlock in SQL? How can you prevent it?
How do we display rows from the table without duplicates?
How to load data through external tables?
What is transaction control statement and how many types of transaction control statement in Oracle?
What exactly do quotation marks around the table name do?
What is sharded cluster?
You have one employee table having 3 entries emp_id, Mgr_id and salary. Mgr_id is also referencing emp_id. so now find out the emp_id which are having the second highest salary, under a particular manager.