CREATE TABLE "running_backs" (
  "player" text,
  "car" real,
  "yards" real,
  "avg" real,
  "td_s" real,
  "long" real
);

Question: How many carries for the RB averaging 4.7, and a long of over 30 yards?
SQL: SELECT SUM("car") FROM "running_backs" WHERE "avg"=4.7 AND "long">30;

Question: How many yards did kevin swayne average, with a long carry over 7?
SQL: SELECT MIN("avg") FROM "running_backs" WHERE "player"='kevin swayne' AND "long">7;

Question: How many yards for the player with over 0 TDs and an average of 2.9?
SQL: SELECT MIN("yards") FROM "running_backs" WHERE "td_s">0 AND "avg"=2.9;

Question: How many TDs for the player averaging over 7, and over 39 yards?
SQL: SELECT MIN("td_s") FROM "running_backs" WHERE "avg">7 AND "yards">39;