CREATE TABLE "pool_1" (
  "team" text,
  "tries_for" real,
  "tries_against" real,
  "try_diff" text,
  "points_for" real,
  "points_against" real,
  "points_diff" text
);

Question: Which Tries against has Points against larger than 156, and Points for of 127, and Tries for larger than 17?
SQL: SELECT AVG("tries_against") FROM "pool_1" WHERE "points_against">156 AND "points_for"=127 AND "tries_for">17;

Question: Which Try diff has Tries for of 12?
SQL: SELECT "try_diff" FROM "pool_1" WHERE "tries_for"=12;