Can we use more than one null value for unique key?
Answer Posted / pavani
No, we can't use more than one null value for unique key.
Unique means it doesn't accept duplicate values.
| Is This Answer Correct ? | 41 Yes | 67 No |
Post New Answer View All Answers
How much does sql cost?
Which are the different character-manipulation functions in sql?
Is sql dba a good career? : SQL DBA
Is a secondary key the same as a foreign key?
what are all types of user defined functions? : Sql dba
What does select * from mean in sql?
Is sql similar to python?
What do you mean by stored procedures? How do we use it?
What are packages in pl sql and also explain its advantages?
Can we want to pass a parameter payroll_id to this external pl/sql function, how do we do it?
How to add a column ‘salary’ to a table employee_details?
What are sql injection vulnerabilities?
what is an extent ? : Sql dba
how to convert numeric values to character strings? : Sql dba
Name the different types of indexes in sql and define them.