Powershell基于列1的组只显示列2 -列3的行

Question

我有一个这样的csv文件:

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列分组，然后先检查最旧的订单，看看backordered_by_palette是否大于或等于Reserved_Sum。

如果为-cge，则只显示该组的该行。如果不是，则检查下一个订单加上第一个订单是否都是，并同时显示它们，依此类推。直到backover_total大于Reserved_Sum

在我的脑海中是这样的:

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

我有不同的部分工作，但我不知道如何把它们放在一起:

如果大于或小于，则返回

很容易:

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

和我尝试添加一个组

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

，但这显示整个组或什么都没有，我不知道如何结合这一切，更不用说如何添加以前的行量，如果需要。

我相信我需要为每个人做几层深度，所以我把MPN分组，为一个MPN创建一个数组，然后为该数组上的每个人(按最老的排序)(不确定如何拉前一行添加)然后导出结果，然后循环移动到下一个组，等等。

呢?我知道这不是真的，我只是想不明白

$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

代码本身相当糟糕，但我相信这是有效的。我添加了注释来或多或少地理解思考过程。

需要注意的一点是，"Nothing To Order"没有位置或没有定义您想要如何显示它，因为它是string，如果您需要显示此信息，则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   

Answer 2

第一步是根据MPN列/属性对记录进行分组，因此让我们首先使用适当命名的Group-Objectcmdlet:

$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

现在它们都正确地分组在一起了，我们可以开始遍历每一组，按日期/订单号对相关记录进行排序，然后输出第一个符合条件的记录:

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
}

Where-Object过滤器中$_.Backordered_by_Pallet前面的+将使PowerShell将值转换为[double]，确保与$_.Reserved_Sum进行正确的数字比较