QuerydrillEveryone with a department
An SQL exercise from Querydrill. Solve it with a SQL editor in your browser, checked on the rows it returns and again on changed data, and it is checked the moment you submit.
The task
Return every employee's name and department name. Employees without a department must still appear, with NULL as the department name.
What this exercise teaches
The table on the left of LEFT JOIN keeps all its rows, matched or not.
A hint if you get stuck
A plain JOIN drops employees with no department. Use LEFT JOIN from employees.
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