CREATE TABLE table_name_91 (laps NUMBER, grid VARCHAR2, time_retired VARCHAR2)

What is the high lap total for cards with a grid larger than 21, and a Time/Retired of +2 laps?
SELECT MAX(laps) FROM table_name_91 WHERE grid > 21 AND time_retired = "+2 laps"
SELECT MAX("laps") FROM "table_name_91" WHERE "+2 laps" = "time_retired" AND "grid" > 21