CREATE TABLE "busiest_domestic_routes_from_lex_april_2" (
  "rank" real,
  "city" text,
  "airport" text,
  "passengers" real,
  "carriers" text
);

Question: What is the least passengers from the Dallas/Fort Worth International (DFW) airport?
SQL: SELECT MIN("passengers") FROM "busiest_domestic_routes_from_lex_april_2" WHERE "airport"='dallas/fort worth international (dfw)';

Question: What city is ranked greater than 6, and the airport is St. Petersburg/Clearwater (PIE)
SQL: SELECT "city" FROM "busiest_domestic_routes_from_lex_april_2" WHERE "rank">6 AND "airport"='st. petersburg/clearwater (pie)';

Question: What is the total rank of the airport that has 79,290 passengers?
SQL: SELECT COUNT("rank") FROM "busiest_domestic_routes_from_lex_april_2" WHERE "passengers"='79,290';