[dusk]

The name is empty because you don't get it with GetPlayerName

pawn Код:

stock UpdateBans(playerid, params[])
{
    new target[MAX_PLAYER_NAME], str[128], query[200];
    GetPlayerName(playerid,target,sizeof(target));
    if(Player[playerid][Banned] == 1)
    {
        mysql_format(SQL,query, sizeof(query),"UPDATE `players` SET `banned` = '0' WHERE `username` = '%s' LIMIT 1", target);
        mysql_tquery(SQL, query, "", "");
        print(query);
        SendClientMessage(playerid, -1, "SERVER:Done!");
    }
    else
    {
        format(str, 128,"[MySQL]:This player is not registered.");
        SendClientMessage(playerid, -1, str);
    }
    return 1;
}