How to Group data from two arrays and get the count - powershell

Question

if I have two arrays and region column has no same values
like
$data1=
Region Type
------ -----------
EuropeWest Operational
EuropeWest Operational
EuropeWest Operational
EuropeNorth Operational
USCentral Operational
USCentral Operational
AsiaEast Operational
AsiaEast Operational
AsiaEast Operational
$data2=
Region Type
------ -----------
EuropeWest MigrateSource
EuropeWest MigrateSource
EuropeNorth MigrateSource
USCentral MigrateSource
USEast MigrateSource
output should be as:
Region Operational MigrateSource
------ ----------- -----------
EuropeWest 4 2
EuropeNorth 1 1
USCentral 2 0
AsiaEast 3 1
Useast 0 1
Any help much appreciated?
I was able to group it but did'nt get any clue how to use foreach loop here:
$data1 | group -Property region | select name,#{n='Operationaclcount';e={$_.count}}
$data2 | group -Property region | select name,#{n='Migratesourcecountt';e={$_.count}}

Answer 1

Since you have two objects with a property name, if we combine these together we have a full list of names. With a ForEach loop, we'll loop over these names and use a Where-Object to filter each of the two objects you created for the count. We'll then create a new object with [pscustomobject]. Finally a quick test if a name is missing from a group that means the count was zero.
$OpCount = $data1 |
Group-Object -Property region |
Select-Object name,#{n='Operationalcount';e={$_.count}}
$MigCount = $data2 |
Group-Object -Property region |
Select-Object name,#{n='Migratesourcecount';e={$_.count}}
$CombinedNames = $OpCount.name + $MigCount.name
Foreach ($Name in $CombinedNames) {
$entry = [pscustomobject]#{
Operational = $OpCount |
Where-Object {$_.name -eq $Name} |
Select-Object -Expand Count
MigrateSource = $MigCount |
Where-Object {$_.name -eq $Name} |
Select-Object -Expand Count
}
if ($entry.Operational -eq $null) { $entry.Operational = 0 }
if ($entry.MigrateSource -eq $null) { $entry.MigrateSource = 0 }
$entry
}

Answer 2

If you want to combine two arrays just use a plus. Something like this:
$data1 + $data2 | Group-Object region | % {
New-Object psobject -property #{
Name = $_.Name
Operational = $_.Count
MigrateSource = #($_.Group | Select Type -Unique).Count
}
}