Powershell Display rows only if column 2 -cge column 3 for a group based on column 1-CodePudding

I have a csv like this:

MPN,Per_Pallet,Customer_Order,Customer_Order_Date,Backordered_by_Pallet,Reserved_Sum
501,116.82,12055,4/28/2021,3.18,1.02
501,116.82,12421,6/7/2021,2.36,1.02
501,116.82,12424,6/7/2021,3.91,1.02
2243,30,12014,4/26/2021,1.4,1
2243,30,12425,6/7/2021,4.8,1
2243,30,12817,7/21/2021,0.4,1
2243,30,13359,9/29/2021,0.6,1
2435,50.22,12014,4/26/2021,1,2
2435,50.22,13311,9/24/2021,1.14,2
218,40,13236,9/15/2021,3,5
218,40,13382,10/4/2021,3,5
7593,64,12670,7/2/2021,5,5
484,8,12582,6/22/2021,0.38,2
484,8,12798,7/16/2021,1.38,2
484,8,13255,9/18/2021,1,2
484,8,13288,9/22/2021,1,2
5647,87,13304,9/23/2021,0.01,1

I need to group by the MPN column then check the oldest order first to see if Backordered_by_Pallet is greater than or equal to Reserved_Sum.

If it is -cge display only that row for that group. if its not, then check to see if the next order plus the first order is and display both of them and so on. until the backorered total is greater than Reserved_Sum

This is what it looks like in my head:

look at oldest order first for matching MPN
    if oldest orders Backordered > Reserved Sum
        Then only display oldest order
    Else if oldest order   second oldest order > Reserved Sum
            then display both orders
        Else If Less Than, Add Next Order etc

Expected Output:

MPN,Per_Pallet,Customer_Order,Customer_Order_Date,Backordered_by_Pallet,Reserved_Sum
501,116.82,12055,4/28/2021,3.18,1.02
2243,30,12014,4/26/2021,1.4,1
2435,50.22,13311,9/24/2021,1.14,2
218,40,13236,9/15/2021,3,5
218,40,13382,10/4/2021,3,5
7593,64,12670,7/2/2021,5,5
484,8,12582,6/22/2021,0.38,2
484,8,12798,7/16/2021,1.38,2
484,8,13255,9/18/2021,1,2
5647,87,13304,9/23/2021,0.01,1

I have gotten different pieces to work, but i cant figure out how to put it all together:

returning if its greater or not is easy enough:

$Magic | ForEach-Object {
        If ($_.Backordered_by_Pallet -cge $_.Reserved_Sum) {$_}
        Else {"Nothing To Order"}
        }

and i have tried adding in a group by

$Magic | Group-Object MPN | ForEach-Object {
        If ($_.group.Backordered_by_Pallet -cge $_.group.Reserved_Sum) {$_}
        Else {"Nothing_Left_To_Order"}
        }

but that displays the whole group or nothing and im not sure how to combine it all, not to mention how to add the previous rows amount if needed.

I believe i need to do a several layer deep for-each so i group the MPN, make an array for just that one mpn, then a for each on that array (sorted by oldest) (not sure how to pull the previous row to add) then export just the results, then the loop moves on to the next group and so on.

Like this? I know this is not real, i jut cant figure it out

 $Magic_Hash = $Magic_File | Group-Object -Property MPN -AsHashTable | Sort $_.group.Customer_Order_Date
        
        ForEach ($item in $Magic_Hash) {
           If ($item.group.Backordered_by_Pallet -cge $_.group.Reserved_Sum) {$_}
        Elseif ($item.group.Backordered_by_Pallet   $item.group.Backordered_by_Pallett["2nd oldest order"] -cge $_.group.Reserved_Sum) {$_}
        else {"Nothing_Left"}
        } 
        ```
Thank you so much for all your help this community is amazing

CodePudding user response：

First step is to group the records based on the MPN column/property, so let's do that first, using the aptly named Group-Object cmdlet:

$records = @'
MPN,Per_Pallet,Customer_Order,Customer_Order_Date,Backordered_by_Pallet,Reserved_Sum
501,116.82,12055,4/28/2021,3.18,1.02
501,116.82,12421,6/7/2021,2.36,1.02
501,116.82,12424,6/7/2021,3.91,1.02
2243,30,12014,4/26/2021,1.4,1
2243,30,12425,6/7/2021,4.8,1
2243,30,12817,7/21/2021,0.4,1
2243,30,13359,9/29/2021,0.6,1
2435,50.22,12014,4/26/2021,1,2
2435,50.22,13311,9/24/2021,1.14,2
218,40,13236,9/15/2021,3,5
218,40,13382,10/4/2021,3,5
7593,64,12670,7/2/2021,5,5
484,8,12582,6/22/2021,0.38,2
484,8,12798,7/16/2021,1.38,2
484,8,13255,9/18/2021,1,2
484,8,13288,9/22/2021,1,2
5647,87,13304,9/23/2021,0.01,1
'@ |ConvertFrom-Csv

$groups = $records |Group-Object MPN

Now that they're all grouped together correctly, we can start going through each group, sort the associated records by date/order number, and then output the first one that matches the condition:

foreach($group in $groups){
  # sort records by order number
  $recordsInGroup = $group.Group |Sort-Object Customer_Order

  # filter records based on the criteria, output only the first 1
  $recordsInGroup |Where-Object {  $_.Backordered_by_Pallet -ge $_.Reserved_Sum } |Select-Object -First 1
}

The in front of $_.Backordered_by_Pallet in the Where-Object filter will mae PowerShell convert the value to a [double], ensuring correct numeric comparison with $_.Reserved_Sum

CodePudding user response：

The code itself is quite awful, but I believe this works. I added comments to understand more or less the thought process.

One thing to note is, "Nothing To Order" has no place or is not defined how you want to display this since, it is a string and if you need to display this information it would probably have to be inserted on one of the cells or create a new column for this.

@'
MPN,Per_Pallet,Customer_Order,Customer_Order_Date,Backordered_by_Pallet,Reserved_Sum
501,116.82,12055,4/28/2021,3.18,1.02
501,116.82,12421,6/7/2021,2.36,1.02
501,116.82,12424,6/7/2021,3.91,1.02
2243,30,12014,4/26/2021,1.4,1
2243,30,12425,6/7/2021,4.8,1
2243,30,12817,7/21/2021,0.4,1
2243,30,13359,9/29/2021,0.6,1
2435,50.22,12014,4/26/2021,1,2
2435,50.22,13311,9/24/2021,1.14,2
218,40,13236,9/15/2021,3,5
218,40,13382,10/4/2021,3,5
7593,64,12670,7/2/2021,5,5
484,8,12582,6/22/2021,0.38,2
484,8,12798,7/16/2021,1.38,2
484,8,13255,9/18/2021,1,2
484,8,13288,9/22/2021,1,2
5647,87,13304,9/23/2021,0.01,1
'@ |ConvertFrom-Csv |
Group-Object MPN | ForEach-Object {
    
    $skip = $false
    [double]$backorderSum = 0

    # Sort by Customer_Order_Date, oldest will be first in line
    foreach($line in $_.Group | Sort-Object {[datetime]$_.Customer_Order_Date})
    {
        if($skip)
        {
            continue
        }

        # If Backordered_by_Pallet is greater than or equal to Reserved_Sum
        if([double]$line.Backordered_by_Pallet -ge [double]$line.Reserved_Sum)
        {
            # Display this line and skip the rest
            $skip = $true
            $line
        }
        else
        {
            # Display this line
            $line

            # Keep a record of previous Values
            $backorderSum  = $line.Backordered_by_Pallet

            # Until this record is greater than or equal to Reserved_Sum
            if($backorderSum -ge [double]$line.Reserved_Sum)
            {
                # Skip the rest when this condition is met
                $skip = $true
            }
        }
    }
} | FT

OUTPUT

MPN  Per_Pallet Customer_Order Customer_Order_Date Backordered_by_Pallet Reserved_Sum
---  ---------- -------------- ------------------- --------------------- ------------
501  116.82     12055          4/28/2021           3.18                  1.02        
2243 30         12014          4/26/2021           1.4                   1           
2435 50.22      12014          4/26/2021           1                     2           
2435 50.22      13311          9/24/2021           1.14                  2           
218  40         13236          9/15/2021           3                     5           
218  40         13382          10/4/2021           3                     5           
7593 64         12670          7/2/2021            5                     5           
484  8          12582          6/22/2021           0.38                  2           
484  8          12798          7/16/2021           1.38                  2           
484  8          13255          9/18/2021           1                     2           
5647 87         13304          9/23/2021           0.01                  1