CREATE TABLE table_name_62 (constructor VARCHAR, driver VARCHAR, laps VARCHAR, grid VARCHAR)

who is the constructor when the laps is less than 68, the grid is more than 20 and the driver is thierry boutsen?
SELECT constructor FROM table_name_62 WHERE laps < 68 AND grid > 20 AND driver = "thierry boutsen"
SELECT "constructor" FROM "table_name_62" WHERE "driver" = "thierry boutsen" AND "grid" > 20 AND "laps" < 68