The answer to this question depends on the database that we are using 1.

Can we use more than one null value for unique key?

Question Posted / slimtech

31 Answers
66426 Views
A1 Technology, Wipro, I also Faced
E-Mail Answers

Answer Posted / slimtech

The answer to this question depends on the database that we
are using
1. In SQL Server and DB2, we can insert only one null value
in the Unique Key column.
2. In Oracle, we can insert multiple null values

Is This Answer Correct ?

31 Yes

0 No

Post New Answer View All Answers

Please Help Members By Posting Answers For Below Questions

Can we insert delete data in view?

995

How do you use join?

992

what are sequences

1813

What is keys and its types?

1120

What is the purpose of the sql select top clause?

1201

Why do we use sql constraints?

1212

What is the purpose of primary key?

1070

What is pl/sql language case sensitive?

1181

Inline the values in PL/SQL, what does it mean.?

1273

What is vector point function?

1094

Is microsoft sql free?

1139

What is multiple columns?

1114

How do I know if I have sql express or standard?

1062

What are character functions?

1138

How do I copy a table in sql?

1036