SQL IS NOT NULL.
SQL IS NOT NULL Explanation Understanding the SQL IS NOT NULL Condition The IS NOT NULL condition in SQL is used to check for non-null values in a specified column. It helps in filtering the data by excluding rows where the column's value is NULL. Go To Download Examples Consider a database table named Employees with the following columns: Id - Employee's ID Name - Employee's Name Department - Department where the employee works Email - Employee's Email Address To select all employees who have an email address (i.e., where the email address is not null), you would use the following SQL query: SELECT * FROM Employees WHERE Email IS NOT NULL; This query returns all records from the Employees table where the Email column does not contain NULL values. Combining Conditions You can combine IS NOT NULL with other conditions to make more spec
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