CREATE TABLE "game_log" (
  "game" real,
  "date" text,
  "team" text,
  "score" text,
  "high_points" text,
  "high_rebounds" text,
  "high_assists" text,
  "location_attendance" text,
  "record" text
);

Question: How many different items appear in the high points column when the location attendance was US Airways Center 18,422?
SQL: SELECT COUNT("high_points") FROM "game_log" WHERE "location_attendance"='US Airways Center 18,422';

Question: What was the high assists on April 7?
SQL: SELECT "high_assists" FROM "game_log" WHERE "date"='April 7';