What's the 2nd leg result in the round where team #1 is Iraklis?
CREATE TABLE "third_round" (
  "team_num1" text,
  "agg_score" text,
  "team_num2" text,
  "1st_leg" text,
  "2nd_leg" text
);
SELECT "2nd_leg" FROM "third_round" WHERE "team_num1"='Iraklis';