sql not exsit

        //check the adConsumed table to find whether the same status, status ‘1‘ is in the table,
        //if the status exsits in the table do not insert that row
        //if the status does not exsit in the table insert the row
        //col2 is the advertisementID calculated from the appinfo with appid
        $sql = ‘INSERT INTO adConsumed(customerID, advertisementID, consumedStatus, consumedTime)
                select col1, col2, col3, col4
                from (select :customerID as col1, (SELECT `advertisementID` FROM `appInfo` WHERE `ID`= :appid) as col2, 1 as col3, :time as col4) t
                WHERE NOT EXISTS (SELECT * FROM adConsumed WHERE customerID = :customerID and advertisementID = col2 and consumedStatus=1)‘;

        $command = $connection->createCommand($sql);
        $command->bindParam(‘:appid‘, $appid);
        $command->bindParam(‘:customerID‘, $customerID);
        $command->bindParam(‘:time‘, date(‘Y-m-d H:i:s‘));
        $updateSucceeded = $command->execute();

sql 语句中包含sql语句.