[Konstantinos]

If you are about to update kills/deaths in OnPlayerDeath, then don't use variables just for getting the increased value. And why would you execute a query if the killer is not valid?

pawn Код:

new query[52];

if (killerid != INVALID_PLAYER_ID)
{
    mysql_format(mysql, query, sizeof(query), "UPDATE players SET Kills=Kills+1 WHERE ID=%d", pInfo[killerid][ID]);
    mysql_pquery(mysql, query, "", "");
}

mysql_format(mysql, query, sizeof(query), "UPDATE players SET Deaths=Deaths+1 WHERE ID=%d", pInfo[playerid][ID]);
mysql_pquery(mysql, query, "", "");