CREATE TABLE table_7712 ("Season" CLOB, "Competition" CLOB, "Round" CLOB, "Opponent" CLOB, "Home" CLOB, "Away" CLOB, "Agg." CLOB)

What was the aggregate total for the match against Koper?
SELECT "Agg." FROM table_7712 WHERE "Opponent" = 'koper'
SELECT "Agg." FROM "table_7712" WHERE "Opponent" = 'koper'