Question: What is the club when 1st leg is 1–2?
SQL: SELECT "Club" FROM "1-1233026-4" WHERE "1st leg" = '1–2';

Question: What is the competition when aggregate is 1–4?
SQL: SELECT "Competition" FROM "1-1233026-4" WHERE "Aggregate" = '1–4';

Question: What is the 1st leg when club is A.C. Libertas?
SQL: SELECT "1st leg" FROM "1-1233026-4" WHERE "Club" = 'A.C. Libertas';

Question: What is the 1st leg when 2nd leg is 1–0 and competition is UEFA Champions League?
SQL: SELECT "1st leg" FROM "1-1233026-4" WHERE "2nd leg" = '1–0' AND "Competition" = 'UEFA Champions League';

Question: What is the competition when 2nd leg is 0–8?
SQL: SELECT "Competition" FROM "1-1233026-4" WHERE "2nd leg" = '0–8';

Question: What is the round when 1st leg is 0–1?
SQL: SELECT "Round" FROM "1-1233026-4" WHERE "1st leg" = '0–1';