SQL – SELECT NULL

In SQL, the SELECT NULL statement is used to select a null value.

Syntax

SELECT NULL;

Example

Let's say we have a table called users that stores user information like their names and emails. If we want to select a null value from this table, we can use the following SQL query:

SELECT NULL FROM users;

This will return a null value for every row in the users table.

Usage

The SELECT NULL statement can be used in a variety of scenarios where we want to include a null value in our SQL query. For example, it can be used to fill in missing data in a report, or to represent an unknown value in a calculation.

Conclusion

The SELECT NULL statement is a simple but powerful tool in SQL that allows us to select a null value when needed. Whether we're filling in missing data or representing an unknown value, this statement gives us the flexibility to handle a wide range of scenarios.