Powershell - Group and count from CSV file - powershell

Question

In my CSV file, I have two columns with header Start_date and Status. I am trying to find out the success percentage for each Start_date
Start_date Status
------------------------------------------
02-03-2022 Completed
02-03-2022 Completed
03-03-2022 Failed
03-03-2022 Completed
I am looking for a final output like below which I export CSV
Start_date Total Completed Failed Success %
02-03-2022 2 2 0 100
03-03-2022 2 1 1 50
As a first step, I am trying to get the count of each day job using below code.
$data = Import-Csv "C:\file.csv"
$data | group {$_.Start_date} | Sort-Object {$_.Start_date} | Select-Object {$_.Status}, Count
Above code will give me output like
$_.Status Count
--------- -----
1
1
it is not showing the date value. what will be the correct approach for this issue ?

Answer 1

You can use Group-Object to group the objects by the date column, then it's just math:
$csv = #'
Start_date,Status
02-03-2022,Completed
02-03-2022,Completed
03-03-2022,Failed
03-03-2022,Completed
'# | ConvertFrom-Csv
# This from your side should be:
# Import-Csv path/to/csv.csv | Group-Object ....
$csv | Group-Object Start_date | ForEach-Object {
$completed, $failed = $_.Group.Status.where({ $_ -eq 'Completed' }, 'Split')
$totalc = $_.Group.Count
$complc = $completed.Count
$failc = $failed.Count
$success = $complc / $totalc
[pscustomobject]#{
Start_Date = $_.Name
Total = $totalc
Completed = $complc
Failed = $failc
Success = $success.ToString('P0')
}
}

Answer 2

Here's another one:
$csv = Import-Csv C:\Temp\tmp.csv
$Results = #()
foreach ($group in $csv | Group Start_date)
{
$Completed = ($group.Group | group status | ? Name -eq Completed).Count
$Failed = ($group.Group | group status | ? Name -eq Failed).Count
$row = "" | Select Start_date,Total,Completed,Failed,"Success %"
$row.Start_date = $group.Name
$row.Total = $group.Count
$row.Completed = $Completed
$row.Failed = $Failed
$row."Success %" = $Completed / 2 * 100
$Results += $row
}
$results
Start_date Total Completed Failed Success %
---------- ----- --------- ------ ---------
02-03-2022 2 2 0 100
03-03-2022 2 1 1 50