Can unique keys be null?

Question Posted / nitin yadav

No Answer is Posted For this Question
Be the First to Post Answer

More SQL PLSQL Interview Questions

Types of cursors and explanation each of them ?

Does truncate table reset auto increment?

How do you retrieve the second highest salary from a table?

Can you selectively load only those records that you need? : aql loader

How do I create a sql script?

Are sql connections encrypted?

what is difference b/w pravite procedures and public procedures?

Is sql sequential or random?

What is input buffer in sql*plus?

What is cte?

counting the no.of characters occurs in a string by using pl/sql function

What is the advantage of index in sql?

For more SQL PLSQL Interview Questions Click Here