CREATE TABLE "e" (
  "artist" text,
  "country" text,
  "number_one_single_s" text,
  "year" real,
  "weeks_at_num1" real,
  "straight_to_num1" text
);

Question: How many years have a weeks at #1 value of exactly 8?
SQL: SELECT COUNT("year") FROM "e" WHERE "weeks_at_num1"=8;