CREATE TABLE "middleweight_77_kg" (
  "name" text,
  "bodyweight" real,
  "snatch" real,
  "clean_jerk" real,
  "total_kg" real
);

Question: How much Snatch has a Total (kg) smaller than 257?
SQL: SELECT SUM("snatch") FROM "middleweight_77_kg" WHERE "total_kg"<257;

Question: Which Snatch has a Clean & Jerk of 180, and a Bodyweight smaller than 69.83?
SQL: SELECT MIN("snatch") FROM "middleweight_77_kg" WHERE "clean_jerk"=180 AND "bodyweight"<69.83;