合併2 CSV的價值「名稱」和合並計數（Powershell）

Question

所以在momemt我正在尋找一種方法來合併2個CSV文件。

這裏是我的意思的例子：

CSV1

"Name","Count" 
"Klaus","3" 
"Hans","2" 
"Gerhard","1" 
"Nina","6" 
"Julia","10" 
"Caro","19" 

CSV2

"Name","Count" 
"Klaus","2" 
"Hans","1" 
"Gerhard","1" 
"Nina","1" 

現在，如果我合併兩者的輸出/結果應該是：

"Name","Count" 
"Klaus","5" 
"Hans","3" 
"Gerhard","2" 
"Nina","7" 
"Julia","10" 
"Caro","19" 

I t很多，但我從來沒有過任何麻煩。我總是有錯誤的結果。有沒有人有一個想法如何做到這一點？

Answer 1

您可以通過Name財產使用Group-Object（化名group）到組的一切。那麼你只需要總結組中每個傢伙的Count屬性。 Measure-Object（別名measure）會爲你做總和。

$grouped = Import-Csv .\csv1.csv, .\csv2.csv | group Name 
$combined = $grouped |%{ 
    New-Object PsObject -Prop @{ Name = $_.Name; Count = ($_.Group | measure -sum -prop Count).Sum } 
} 
$combined | Export-Csv .\combined.csv -NoType 

Answer 2

導入CSV文件，並轉換每到一個哈希表，然後找到共同的名字：

$csv1 = Import-Csv -Path csv1.csv 
$csv2 = Import-Csv -Path csv2.csv 

$HashCSV1 = @{} 
$HashCSV2 = @{} 
$HashMerge = @{} 

foreach($r in $csv1) 
{ 
    $HashCSV1[$r.Name] = $r.Count 
} 

foreach($r in $csv2) 
{ 
    $HashCSV2[$r.Name] = $r.Count 
} 

foreach ($key in $HashCSV1.Keys) { 
    if ($HashCSV2.ContainsKey($key)) { 
     $HashMerge[$key] = [int]$HashCSV1[$key] + [int]$HashCSV2[$key] 
    } else { 
     $HashMerge[$key] = $HashCSV1[$key] 
    } 
} 

foreach ($key in $HashCSV2.Keys) { 
    if (-not $HashCSV1.ContainsKey($key)) { 
     $HashMerge[$key] = $HashCSV2[$key] 
    } 
} 

&{$HashMerge.getenumerator() | 
    foreach {new-object psobject -Property @{Name = $_.name;Count=$_.value}} 
    } | export-csv merge.csv -notype