UPDATE Employees SET manager_id = 108 WHERE dept_id = 1 AND emp_id NOT IN (108); UPDATE Employees SET manager_id = 109 WHERE emp_id IN (110,111,124,125,126,142,143); UPDATE Employees SET manager_id = ...
A comprehensive data engineering platform implementing the Medallion Architecture (Bronze-Silver-Gold) using Apache Spark, Airflow, MinIO, and modern analytics tools.