Powershell 仅当基于列 1 的组的列 2 -cge 列 3 时才显示行

Question

我有一个像这样的 csv:

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

我需要按 MPN 列进行分组，然后首先检查最旧的订单，看看 Backordered_by_Pallet 是否大于或等于 Reserve_Sum。

如果是 -cge 则仅显示该组的该行。如果不是，则检查下一个订单加上第一个订单是否是并显示它们，依此类推。直到后备总数大于Reserved_Sum

这就是我脑海中的样子:

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

预期输出:

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

我已经得到了不同的部分来工作，但我不知道如何将它们组合在一起:

返回是否大于或不足够容易:

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

我尝试添加一个组

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

但这会显示整个组或什么也不显示，我不确定如何将其全部组合起来，更不用说如何在需要时添加前面的行数了。

我相信我需要对每个进行多层深度处理，所以我将 MPN 分组，为该 mpn 创建一个数组，然后为该数组上的每个(按最旧排序)创建一个数组(不知道如何提取上一行来添加)，然后仅导出结果，然后循环移至下一组，依此类推。

像这样吗？我知道这不是真的，我只是无法弄清楚

 $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

Answer 1

代码本身非常糟糕，但我相信这是可行的。我添加了评论以或多或少地了解思考过程。

需要注意的一点是，“Nothing To Order” 没有位置，或者没有定义您想要如何显示它，因为它是一个 字符串，如果您需要显示此信息，可能必须将其插入其中一个单元格或为此创建一个新列。

@'
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

输出

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