How many Points against that have a Team of harlequins and Tries against smaller than 8?
CREATE TABLE "pool_3" (
  "team" text,
  "tries_for" real,
  "tries_against" real,
  "try_diff" text,
  "points_for" real,
  "points_against" real,
  "points_diff" text
);
SELECT SUM("points_against") FROM "pool_3" WHERE "team"='harlequins' AND "tries_against"<8;