How much 0–100km/h, s has a Fuel of diesel, and a Torque of n·m (lb·ft) @1900 rpm, and an Engine ID code(s) of agr/alh?
CREATE TABLE "engines" (
  "name" text,
  "volume" text,
  "engine" text,
  "fuel" text,
  "output" text,
  "torque" text,
  "engine_id_code_s" text,
  "0_100km_h_s" real,
  "top_speed" text,
  "co_2" text,
  "years" text
);
SELECT COUNT("0_100km_h_s") FROM "engines" WHERE "fuel"='diesel' AND "torque"='n·m (lb·ft) @1900 rpm' AND "engine_id_code_s"='agr/alh';