User Sign in from different countries

Original query, unchanged.

let threshold = 2;
let Countrydb = externaldata(Network:string, geoname_id:string, continent_code:string, continent_name:string, country_iso_code:string, country_name:string)
[@"https://raw.githubusercontent.com/datasets/geoip2-ipv4/master/data/geoip2-ipv4.csv"];
let UsersLocation = SalesforceServiceCloud
| where EventType =~ 'Login' and LoginStatus=~'LOGIN_NO_ERROR'
| project TimeGenerated, TimestampDerived, ClientIp, UserId, User, UserType ;
UsersLocation
| extend Dummy=1
| extend TimestampDerived = todatetime(TimestampDerived)
| summarize count() by Hour=bin(TimestampDerived,30m), ClientIp,User, Dummy
| partition by Hour(
                lookup (Countrydb|extend Dummy=1) on Dummy
              | where ipv4_is_match(ClientIp, Network)
              )
| summarize NumOfCountries = dcount(country_name) by User, Hour
| where NumOfCountries >= threshold