How can a new column be created in the SELECT clause?

Creating a new column in the SELECT clause allows you to perform calculations or manipulate existing data and display it in a new format. The correct choice demonstrates the proper SQL syntax for creating an alias for a computed value.

In the correct answer, "Salary*.01 as Increase," the expression calculates 1% of the Salary and assigns the result to a new column named 'Increase'. The use of 'as' specifies the alias for the calculated column, which is a standard SQL practice. This means that whenever the query is executed, in the result set, you will see the new column labeled 'Increase' containing the computed values based on the original 'Salary' values.

In contrast, the other options do not follow the correct syntax or conventions for creating a new column in a SELECT statement. For example, the use of 'Bonus=Salary*.03' attempts to assign a value without the proper alias syntax, while 'As Salary*.03 Bonus' appears to confuse the correct format for naming a new column. Lastly, 'Job_Level as Scan (Job_Title, 1, ' ');' indicates an attempt to perform a scan operation, but it does not represent a standard way to create a new column in SQL.

Therefore, the correct formulation not