[coakiddo]

Код:

CMD:changename(playerid,params[])
{
    if(pInfo[playerid][pAdminLevel] >= 4)
    {
        new targetid,newname[24],string[256];
        if(sscanf(params, "us[24]",targetid,newname)) return SendClientMessage(playerid,-1,"/changename [ID] [New Name]");
        if(!IsPlayerConnected(targetid)) return SendClientMessage(playerid,-1," Player is not online");

        new escapename[24], Query[128];
        mysql_real_escape_string(newname, escapename);
        format(Query, sizeof(Query), "SELECT `user` FROM `playerinfo` WHERE `user` = '%s' LIMIT 1", escapename);
        mysql_query(Query);
        mysql_store_result();
        new rows = mysql_num_rows();
        if(!rows)
        {
            format(Query, sizeof(Query), "UPDATE `playerinfo` SET `user`= '%s' WHERE `user` ='%s'",escapename,PlayerName(targetid));
            mysql_query(Query);
            SetPlayerName(targetid, newname);
            format(string,sizeof(string),""COL_LIGHTBLUE" %s %s changed your name to %s",GetAdminName(playerid),PlayerName(playerid),newname);
            SendClientMessage(targetid,-1,string);
            format(string,sizeof(string),"You've changed ID %d name to %s",targetid, PlayerName(targetid));
            SendClientMessage(playerid,-1,string);
        }
        else if(rows == 1)
        {
            SendClientMessage(playerid, -1, " This name already exists!");
        }
        mysql_free_result();
    }
    else {
        SendClientMessage(playerid,-1,""COL_LIGHTBLUE" You do not have the right admin permissions for this command!");
    }
    return 1;
}

Use "u" instead of "d".