Master SQL and everything will be given to you!
DA to DA, try to learn and master SQL. Don't based your whole learning on Excel, Power BI, and Dashboard. Most of the data jobs required database and SQL knowledge. Know this and stay updated.
SELECT student_id, name, grade, class FROM ( SELECT student_id, name, grade, class, ROW_NUMBER() OVER (PARTITION BY class ORDER BY grade DESC) as rank FROM students ) ranked_students WHERE rank <= 3 ORDER BY class, grade DESC;
SELECT department, name, hire_date, salary FROM employees e1 WHERE hire_date = ( SELECT MAX(hire_date) FROM employees e2 WHERE e2.department = e1.department );
Here you are!
It will return the employee IDs and names of employees from the 'Finance' department, excluding those who are assigned to projects with a budget greater than 500,000.
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