CREATE TABLE technician (technician_id NUMBER, name CLOB, team CLOB, starting_year NUMBER, age NUMBER)
CREATE TABLE repair_assignment (technician_id NUMBER, repair_id NUMBER, machine_id NUMBER)
CREATE TABLE repair (repair_id NUMBER, name CLOB, launch_date CLOB, notes CLOB)
CREATE TABLE machine (machine_id NUMBER, making_year NUMBER, class CLOB, team CLOB, machine_series CLOB, value_points NUMBER, quality_rank NUMBER)

What is the starting year for the oldest technician?
SELECT starting_year FROM technician ORDER BY age DESC LIMIT 1
SELECT "starting_year" FROM "technician" ORDER BY "age" DESC FETCH FIRST 1 ROWS ONLY