Indlejrede forespørgsler for at få optælling med to betingelser

Du skal gruppere kolonne infection og (ip &ipc ) anderledes, så tilslut dem ved at bruge en underforespørgsel som denne:

SELECT t1.ip, t1.isp, t2.infection, t1.ipc, t1. ispc, t2.incount
FROM
    (SELECT ip, isp, infection, COUNT(ip) as ipc, COUNT(isp) as ispc
    FROM (
       SELECT ip, isp, infection
       FROM tbl1
       UNION ALL
       SELECT ip, isp, infection
       FROM tbl2
       UNION ALL
       SELECT ip, isp, infection
       FROM tbl3
       )x
     GROUP BY ip, isp) t1
JOIN
    (SELECT ip, isp, infection, COUNT(infection) as incount
     FROM (
       SELECT ip, isp, infection
       FROM tbl1
       UNION ALL
       SELECT ip, isp, infection
       FROM tbl2
       UNION ALL
       SELECT ip, isp, infection
       FROM tbl3
       )x
    GROUP BY ip, isp,  infection)t2
ON t1.ip = t2.ip
ORDER BY ip, isp, infection Desc

Se denne SQLFiddle

Bemærk: Jeg tror, at dit ønskede output er forkert, fordi:

I Table3 der er ingen infection for ip=6 men det er i dit output
infection other mangler i dit output (i stedet er der malware )