Андрій
UPDATE testusers
SET exp = exp + '"+user2expearned+"',
gold = gold + '"+user2goldearned+"',
wininclanbattle = '"+(adptr.clanbattle == 1 ? '"wininclanbattle + 1 '": '"wininclanbattle'")"+
WHERE id = '"+adptr.user2id+"'"
или так, только "wininclanbattle + 1 " тут одни кавычки