When Hapoel tel aviv was team 2 and 1st leg was 1–2, what was the 2nd leg?
CREATE TABLE "play_off_round" (
  "team_1" text,
  "agg" text,
  "team_2" text,
  "1st_leg" text,
  "2nd_leg" text
);
SELECT "2nd_leg" FROM "play_off_round" WHERE "1st_leg"='1–2' AND "team_2"='hapoel tel aviv';