Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / pr@$@d
Null means unknown value
The value null can be regarded as an unknown value.
Therefore, the following select statement returns null:
select 5+7+null+9 from dual;
Note : A null can be assigned but it can not be equated
with anything: Even itself.
Regards,
-Pr@$@d.
prasadreddi@ymail.com
| Is This Answer Correct ? | 18 Yes | 3 No |
Post New Answer View All Answers
how to handle exceptions in post production
How to open a cursor variable?
Why do you use stored procedures and state some of its disadvantages?
How index is implemented in oracle database?
How to save query output to a local file?
How do we create privileges in oracle?
How to use "if" statements on multiple conditions?
Explain the difference between a procedure and a function? What do you understand by those terms?
You have 4 instances running on the same UNIX box. How can you determine which shared memory and semaphores are associated with which instance?
Give the advantages and disadvantages of clusters.
How to use select statement to count the number of rows in oracle?
Will you be able to store pictures in the database?explain.
What are operators in oracle?
What are the advantages of oracle 12c?
why dont we assign not null constraint as table level constraint.
