What is a view in SQL?

SQL | View View in SQL is a kind of virtual table. It does not physical exists in our database but have rows and column as there we have in real database table. we can…

What is the difference between primary key and unique constraints?

SQL | Difference between primary key and unique constraints There is only one primary key in a table. It creates the cluster index automatically and it cannot have NULL value where as there can be…

Write an SQL query to find names of employee start with 'A'?

SQL | LIKE operator The LIKE operator of SQL is used for such kind of operations. It is used to fetch filtered data by searching for a particular pattern in where clause.   The Syntax for…