CREATE TABLE table_10233 ("Date" CLOB, "Venue" CLOB, "Opponent" CLOB, "Result" CLOB, "Competition" CLOB)

Which opponent is friendly and played on 15-08-2012?
SELECT "Opponent" FROM table_10233 WHERE "Competition" = 'friendly' AND "Date" = '15-08-2012'
SELECT "Opponent" FROM "table_10233" WHERE "Competition" = 'friendly' AND "Date" = '15-08-2012'