SELECT max(years_working) ,  min(years_working) ,  avg(years_working) FROM school_bus
SELECT max(years_working) ,  min(years_working) ,  avg(years_working) FROM school_bus <table_name> : school_bus col : School_ID | Driver_ID | Years_Working | If_full_time row 1 : 1 | 10 | 10 | F row 2 : 5 | 7 | 8 | T row 3 : 3 | 4 | 6 | T row 4 : 7 | 9 | 2 | T row 5 : 4 | 3 | 3 | T
col : max(years_working) | min(years_working) | avg(years_working) row 1 : 10 | 2 | 5.8