CREATE TABLE "losers_knockout" (
  "home_1st_leg" text,
  "home_2nd_leg" text,
  "1st_leg" text,
  "2nd_leg" text,
  "aggregate" text
);

Question: What was the score of the 2nd leg when the Belgrano played the first leg at home with a score of 2-1?
SQL: SELECT "2nd_leg" FROM "losers_knockout" WHERE "1st_leg"='2-1' AND "home_1st_leg"='belgrano';

Question: What was the aggregate score that had a 1-2 second leg score?
SQL: SELECT "aggregate" FROM "losers_knockout" WHERE "2nd_leg"='1-2';

Question: Which team played their first leg at home with an aggregate score of 3-4?
SQL: SELECT "home_1st_leg" FROM "losers_knockout" WHERE "aggregate"='3-4';

Question: Which team played the 2nd leg at home with a tie of 1-1 and scored 3-2 in aggregate?
SQL: SELECT "home_2nd_leg" FROM "losers_knockout" WHERE "aggregate"='3-2' AND "2nd_leg"='1-1';

Question: Who played at home for the 2nd leg with a score of 1-2?
SQL: SELECT "home_2nd_leg" FROM "losers_knockout" WHERE "2nd_leg"='1-2';

Question: Who played at home for the second leg with a score of 0-1 and tied 0-0 in the first leg?
SQL: SELECT "home_2nd_leg" FROM "losers_knockout" WHERE "1st_leg"='0-0' AND "2nd_leg"='0-1';