CREATE TABLE table_203_142 (id DECIMAL, "pos" TEXT, "no" DECIMAL, "rider" TEXT, "bike" TEXT, "laps" DECIMAL, "time" TEXT, "grid" DECIMAL, "points" DECIMAL)

what is the number of non retired riders ?
SELECT COUNT("rider") FROM table_203_142 WHERE "time" <> 'retirement'
SELECT COUNT("rider") FROM "table_203_142" WHERE "time" <> 'retirement'