CREATE TABLE "series_2" (
  "episode_no" real,
  "airdate" text,
  "viewers" real,
  "bbc_three_weekly_ranking" text,
  "cable_rank" text
);

Question: How many items are listed under viewers column when the bbd three weekly ranking was 1?
SQL: SELECT COUNT("viewers") FROM "series_2" WHERE "bbc_three_weekly_ranking"='1';

Question: What episode number had a cable ranking of 8?
SQL: SELECT MIN("episode_no") FROM "series_2" WHERE "cable_rank"='8';

Question: What date did the episode air that had n/a for it's bbc three weekly ranking?
SQL: SELECT "airdate" FROM "series_2" WHERE "bbc_three_weekly_ranking"='N/A';

Question: What date did the episode air that had a ranking of 17 for cable?
SQL: SELECT "airdate" FROM "series_2" WHERE "cable_rank"='17';