Which team played at home for the second leg and has aggregate score of 2-0?
CREATE TABLE "knockout_stages" (
  "home_1st_leg" text,
  "home_2nd_leg" text,
  "1st_leg" text,
  "2nd_leg" text,
  "aggregate" text
);
SELECT "home_2nd_leg" FROM "knockout_stages" WHERE "aggregate"='2-0';