what is the dual table in oracle?
How to list all tables in your schema?
What is a cursor variable?
How to define a variable to match a table column data type?
What is raw datatype?
how to genarate random numbers in oracle for particular row?
Is it possible to set second Primary Key Constraint in a table in Oracle Database ?
what are stored procedures?
Please explain oracle data types with examples?
Define Normalization with example?
What are the common oracle dba tasks?
When do we use group by clause in a sql query?
write sql query following source are EmpID, Salary 101 1000 102 2000 103 3000 I want the output format like following empid,sal,composite_sal 101 1000 1000 102 2000 3000 103 3000 6000