Can we have more than one NULL in a column having unique
constraint?
Answer Posted / drona
UNIQUE constraints can accept NULL just once.
I have a dought?
Every null is different?
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is primary key index?
Which sql server table is used to hold the stored procedure scripts?
Why are you getting errors when creating a new odbc dsn?
How many types of attribute relationships are there? : sql server analysis services, ssas
you have separate development and production systems you want to move a copy of a development database into production to do this, you do a backup on the development system and restore to the production system after a few minutes, you begin getting calls from several customers saying that they are denied access to the system why? : Sql server administration
How does a profiler work?
What is analysis service repository?
What is user-defined function?
What are the different types of replication are there in sql server 2000?
Explain filestream storage of sql server 2008?
Explain boyce and codd normal form(bcnf)?
How does recursive cte works in sql server?
Define ACID properties in a Database?
How to retrieve error messages using odbc_errormsg()?
How do I trace a query in sql server?