Compare-Object multi values powershell - powershell

Question

please, could you help me find a solution to handle csv file with multiple field column
File1.csv
Teams,Category,Members
Team1,A,Smith;Johnson
Team1,C,Jones;Miller;Garcia
Team3,E,Wilson;Martinez
Team4,A,Martin;Jackson;White;Williams
File2.csv
Teams,Category,Members
Team1,A,Smith;Johnson
Team2,C,Jones;Miller;Garcia
Team3,E,Wilson;Martinez;Gonzalez;Hall
Team4,A,Martin;Jackson;Williams
Diff :
Add Gonzalez and Hall on teams 3
Remove White on Team-4
$1 = Import-Csv -Path ".\File1.csv" -Delimiter ','
$2 = Import-Csv -Path ".\File2.csv" -Delimiter ','
Compare-Object $1 $2 -Property Members -PassThru
Result :
Teams Category Members SideIndicator
Team3 E Wilson;Martinez;Gonzalez;Hall =>
Team4 A Martin;Jackson;Williams =>
Team3 E Wilson;Martinez <=
Team4 A Martin;Jackson;White;Williams <=
what is expected :
Teams Category Members SideIndicator
Team3 E Gonzalez and Hall =>
Team4 A White <=

Answer 1

I'd compare objects first to find differencies (notice that I compare two properties: Teams and Members to avoid missing entries in case the membership of different teams matches) and then compare the arrays created from matching objects:
$1 = Import-Csv -Path ".\File1.csv" -Delimiter ','
$2 = Import-Csv -Path ".\File2.csv" -Delimiter ','
$comparisonRes = Compare-Object $1 $2 -Property Teams,Members -PassThru
foreach ($obj in $comparisonRes | Where-Object SideIndicator -eq "=>") {
# $obj = ($comparisonRes | Where-Object SideIndicator -eq "=>")[0]
$matchingEntry = $1 | Where-Object {$_.Teams -eq $obj.Teams}
$matchingEntryMembers = $matchingEntry.Members -split ";"
$currentEntryMembers = $obj.Members -split ";"
$diffMembers = Compare-Object $matchingEntryMembers $currentEntryMembers
# Uncomment to log
# $diffMembers
# Do something with $diffMembers here
}

Answer 2

You might want to use json instead of csv which supports arrays and numbers. Otherwise the teams look like two semicolon separated strings.
file1.json
[
{"Teams":"Team1","Category":"A","Members":["Smith","Johnson"]},
{"Teams":"Team1","Category":"C","Members":["Jones","Miller","Garcia"]},
{"Teams":"Team3","Category":"E","Members":["Wilson","Martinez"]},
{"Teams":"Team4","Category":"A","Members":["Martin","Jackson","White","Williams"]}
]
file2.json
[
{"Teams":"Team1","Category":"A","Members":["Smith","Johnson"]},
{"Teams":"Team2","Category":"C","Members":["Jones","Miller","Garcia"]},
{"Teams":"Team3","Category":"E","Members":["Wilson","Martinez","Gonzalez","Hall"]},
{"Teams":"Team4","Category":"A","Members":["Martin","Jackson","Williams"]}
]
$1 = cat file1.json | convertfrom-json
$2 = cat file2.json | convertfrom-json
Compare-Object $1 $2 -Property Members -PassThru
Teams Category Members SideIndicator
----- -------- ------- -------------
Team3 E {Wilson, Martinez, Gonzalez, Hall} =>
Team4 A {Martin, Jackson, Williams} =>
Team3 E {Wilson, Martinez} <=
Team4 A {Martin, Jackson, White, Williams} <=
Here's a closer answer. Run compare-object on members only one line at a time, then add teams and category to it.
$1 = cat file1.json | convertfrom-json
$2 = cat file2.json | convertfrom-json
for($i = 0; $i -lt $1.length; $i++) {
compare-object $1[$i].members $2[$i].members |
select #{n='Teams'; e={$1[$i].teams}},
#{n='Category'; e={$1[$i].Category}},
#{n='Members'; e={$_.inputobject}},
sideindicator
}
Teams Category Members SideIndicator
----- -------- ------- -------------
Team3 E Gonzalez =>
Team3 E Hall =>
Team4 A White <=
Here's another way using a zip function PowerShell/CLI: "Foreach" loop with multiple arrays on both lists of objects.
$1 = cat file1.json | convertfrom-json
$2 = cat file2.json | convertfrom-json
function Zip($a1, $a2) { # function allows it to stream
while ($a1) {
$x, $a1 = $a1 # $a1 gets the tail of the list
$y, $a2 = $a2
[tuple]::Create($x, $y)
}
}
zip $1 $2 | % {
$whole = $_ # will lose this $_ in the select
compare-object $whole.item1.members $whole.item2.members |
select #{n='Teams'; e={$whole.item1.teams}},
#{n='Category'; e={$whole.item1.Category}},
inputobject,sideindicator
}
Teams Category InputObject SideIndicator
----- -------- ----------- -------------
Team3 E Gonzalez =>
Team3 E Hall =>
Team4 A White <=