CREATE TABLE "player_info" (
  "no" real,
  "name" text,
  "place_of_birth" text,
  "date_of_birth" text,
  "previous_club" text,
  "date_joined" text,
  "fee" text,
  "contract_expiry" text
);

Question: for the ben williams name what was the previous club
SQL: SELECT "previous_club" FROM "player_info" WHERE "name"='Ben Williams';

Question: what is the fee for ankaragücü previous club
SQL: SELECT "fee" FROM "player_info" WHERE "previous_club"='Ankaragücü';

Question: how many date of birts are if the previous club is chelsea
SQL: SELECT COUNT("date_of_birth") FROM "player_info" WHERE "previous_club"='Chelsea';

Question: for the no. 7 what is the date of birth
SQL: SELECT "date_of_birth" FROM "player_info" WHERE "no"=7;