Question: If the aggregate is 3-4, what is the first leg?
SQL: SELECT "Home (1st leg)" FROM "1-17968233-2" WHERE "Aggregate" = '3-4';

Question: If the second leg is Instituto, what is the total number of aggregate?
SQL: SELECT COUNT("Aggregate") FROM "1-17968233-2" WHERE "Home (2nd leg)" = 'Instituto';

Question: If the second leg is 1-1, what is the first leg?
SQL: SELECT "Home (1st leg)" FROM "1-17968233-2" WHERE "2nd leg" = '1-1';

Question: If the second leg is 3-2, what is the first leg?
SQL: SELECT "Home (1st leg)" FROM "1-17968233-2" WHERE "2nd leg" = '3-2';