Interested to Buy Any Domain ? << Click Here >> for more details...
Can we have more than one NULL in a column having unique
constraint?
- 12 Answers
- 16953 Views
- 247Customer, I also Faced
- E-Mail Answers
Answer Posted / krishnaraj p n
UNIQUE constraints can accept NULL just once. If the
constraint is defined in a combination of fields, then
every field can accept NULL and can have some values on
them, as long as the combination values is unique.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
What is the main purpose of having conversation group?
What is database black box testing?
What is trigger in salesforce?
How to create a view and a stored procedure in ms sql server using "create view/procedure" statements?
Where to find ntwdblib.dll version 2000.80.194.0?
what is sql server? : Sql server database administration
What are sub reports and how to create them?
How do I setup a local sql server database?
What do you understand by SQL*Net?
What is normalization? Explain different forms of normalization?
What is the use of floor function in sql server?
Can I delete event logs?
What do you understand by recursive stored procedure?
What is use of except clause? How does it differ from not in clause?
Explain insert into select statement?
