CREATE TABLE "topscorers_in_order_of_league_goals" (
  "player" text,
  "club" text,
  "league" real,
  "play_offs" real,
  "fa_cup" real,
  "fa_trophy" real,
  "total" real
);

Question: What is the mean number of play-offs when the league number was bigger than 18, where the player was John Grant and the total number was bigger than 25?
SQL: SELECT AVG("play_offs") FROM "topscorers_in_order_of_league_goals" WHERE "league">18 AND "player"='john grant' AND "total">25;

Question: Which mean total had Tim Sills as a player?
SQL: SELECT AVG("total") FROM "topscorers_in_order_of_league_goals" WHERE "player"='tim sills';

Question: Which of the lowest FA Trophys involved the Forest Green Rovers club when the play-offs number was bigger than 0?
SQL: SELECT MIN("fa_trophy") FROM "topscorers_in_order_of_league_goals" WHERE "club"='forest green rovers' AND "play_offs">0;

Question: Which of the lowest leagues had Aldershot town as a club when the play-offs number was less than 0?
SQL: SELECT MIN("league") FROM "topscorers_in_order_of_league_goals" WHERE "club"='aldershot town' AND "play_offs"<0;

Question: What mean total had a league number of 18, Richard Logan as a player, and a play-offs number smaller than 1?
SQL: SELECT AVG("total") FROM "topscorers_in_order_of_league_goals" WHERE "league"=18 AND "player"='richard logan' AND "play_offs"<1;