Table: grand_prix_1993
Columns: driver
constructor
laps
time_retired
grid

Question: how many laps have a time/retired of +1 lap and mark blundell is the driver?
SQL: SELECT AVG("laps") FROM grand_prix_1993 WHERE "time_retired" = '+1 lap' AND "driver" = 'mark blundell'

Question: what is the highest grid when the time/retired is fuel pump and the laps is more than 26?
SQL: SELECT MAX("grid") FROM grand_prix_1993 WHERE "time_retired" = 'fuel pump' AND "laps" > 26

Question: what is the least laps for driver gerhard berger with a grid more than 6?
SQL: SELECT MIN("laps") FROM grand_prix_1993 WHERE "driver" = 'gerhard berger' AND "grid" > 6