What is difference between nchar and nvarchar?
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What is auto increment in sql?
Is sql better than excel?
Explain locks? : Transact sql
Can we use ddl statements in stored procedure?
What are the most important characteristics of pl/sql?
What are different types of indexes?
When are we going to use truncate and delete?
what is Complex index. how to create it?
Is it important to partition hard disk?
select sal from emp group by sal
What is ON DELETE CASCADE?
How do you explain an index?