Why LEFT JOIN? Includes members with no borrowings (COUNT returns 0).
) introduced in Oracle 12c to simplify what used to require complex subqueries. 5. Advanced Logic: Handling Complexity oracle 12c sql hands-on assignments solutions
-- Delete all employees who work in the 'Finance' department DELETE FROM EMPLOYEES WHERE DEPARTMENT_ID = (SELECT DEPARTMENT_ID FROM DEPARTMENTS WHERE DEPARTMENT_NAME = 'Finance'); Why LEFT JOIN