How many home (2nd leg) had a 1st leg 1-1?
CREATE TABLE "winners_knockout" (
  "home_1st_leg" text,
  "home_2nd_leg" text,
  "1st_leg" text,
  "2nd_leg" text,
  "aggregate" text
);
SELECT COUNT("home_2nd_leg") FROM "winners_knockout" WHERE "1st_leg"='1-1';