sql = new StringBuilder ("UPDATE I_Product i ") .append("SET I_IsImported='E', I_ErrorMsg=I_ErrorMsg||'ERR=Value not unique,' ") .append("WHERE I_IsImported<>'Y'") .append(" AND Value IN (SELECT Value FROM I_Product ii WHERE i.AD_Client_ID=ii.AD_Client_ID GROUP BY Value HAVING COUNT(*) > 1)").append(clientCheck);