Powershell：在两个has表和两个csv文件之间查找并向列追加值

我要尝试打破这个简单

问题描述 2个csv文件（目标文件的字段由其他csv文件自动填充）

我有一个包含3行的源csv文件，其中包含：

sourceColumn1,sourceColumn2,sourceColumn3,sourceColumn4,sourceColumn5,sourceColumn6,sourceColumn7    ,sourceColumn8    ,sourceColumn9,sourceColumn10,sourceColumn11,sourceColumn12,sourceColumn13,sourceColumn14,sourceColumn15,sourceColumn16
sourceValue1 ,value2a      ,value3a      ,value4a      ,value5a      ,             ,value7a          ,sourceValueFound1,value9a      ,              ,              ,value12a      ,              ,              ,              ,
value1b      ,value2b      ,value3b      ,value4b      ,value5b      ,sourceValue2 ,                 ,sourceValueFound2,value9b      ,              ,              ,              ,value13b      ,              ,              ,
value1c      ,             ,value3c      ,value4c      ,value5c      ,sourceValue3 ,                 ,sourceValueFound3,value9c      ,              ,              ,              ,              ,              ,sourceValue3  ,

"destinationColumn1","destinationColumn2","destinationColumn3","destinationColumn4","destinationColumn5","destinationColumn6"
"value1aa"          ,"value2aa"          ,"value3aa"          ,"sourceValue1"      ,"value5aa"          ,"AdValueFound1"
"value1bb"          ,"sourceValue2"      ,"value3bb"          ,"value4bb"          ,"sourceValue2"      ,"AdValueFound2"
"value1cc"          ,"sourceValue3"      ,"value3cc"          ,"value4cc"          ,"value5cc"          ,"No SourceValueFound"

我有一个目标csv文件（在运行代码之前），其中有3行包含：

sourceColumn1,sourceColumn2,sourceColumn3,sourceColumn4,sourceColumn5,sourceColumn6,sourceColumn7    ,sourceColumn8    ,sourceColumn9,sourceColumn10,sourceColumn11,sourceColumn12,sourceColumn13,sourceColumn14,sourceColumn15,sourceColumn16
sourceValue1 ,value2a      ,value3a      ,value4a      ,value5a      ,             ,value7a          ,sourceValueFound1,value9a      ,              ,              ,value12a      ,              ,              ,              ,
value1b      ,value2b      ,value3b      ,value4b      ,value5b      ,sourceValue2 ,                 ,sourceValueFound2,value9b      ,              ,              ,              ,value13b      ,              ,              ,
value1c      ,             ,value3c      ,value4c      ,value5c      ,sourceValue3 ,                 ,sourceValueFound3,value9c      ,              ,              ,              ,              ,              ,sourceValue3  ,

"destinationColumn1","destinationColumn2","destinationColumn3","destinationColumn4","destinationColumn5","destinationColumn6"
"value1aa"          ,"value2aa"          ,"value3aa"          ,"sourceValue1"      ,"value5aa"          ,"AdValueFound1"
"value1bb"          ,"sourceValue2"      ,"value3bb"          ,"value4bb"          ,"sourceValue2"      ,"AdValueFound2"
"value1cc"          ,"sourceValue3"      ,"value3cc"          ,"value4cc"          ,"value5cc"          ,"No SourceValueFound"

最终目标 我希望在目标文件中添加一列

destinationColumn7

，其中包含源文件中

sourceColumn8

中的where（值-ne$null）

通过从源文件中查找

sourceValue#

并将其与目标文件中的

sourceValue#

进行匹配，即可匹配正确的值

因此，目标文件应如下所示：

"destinationColumn1","destinationColumn2","destinationColumn3","destinationColumn4","destinationColumn5","destinationColumn6" ,"destinationColumn7"
"value1aa"          ,"value2aa"          ,"value3aa"          ,"sourceValue1"      ,"value5aa"          ,"AdValueFound1"      ,"sourceValueFound1"
"value1bb"          ,"sourceValue2"      ,"value3bb"          ,"value4bb"          ,"sourceValue2"      ,"AdValueFound2"      ,"sourceValueFound2"
"value1cc"          ,"sourceValue3"      ,"value3cc"          ,"value4cc"          ,"value5cc"          ,"No SourceValueFound","sourceValueFound3"

到目前为止我都试过了 为此，我使用以下代码

Write-Host "Creating hash table with columns `"sourceColumn1`" and `"sourceColumn8`" From $sourceCsvFile"
$FirstHashTable = @{}
Import-Csv $sourceCsvFile | ForEach-Object {
    $FirstHashTable[$_.sourceColumn1] = If ($_.sourceColumn8) {$_.sourceColumn8} Else {'No SourceValueFound'}}
Write-Host "Complete."

Write-Host "Appending new destinationColumn7 column from hash table"
(Import-Csv $destinationCsvFile) |
    Select-Object -Property *, @{n='destinationColumn7';e={
    If ($FirstHashTable.ContainsKey($_.destinationColumn4)){
        $FirstHashTable[$_.destinationColumn4]
    } ElseIf ($FirstHashTable.ContainsKey($_.destinationColumn5)){
        $FirstHashTable[$_.destinationColumn5]
    } ElseIf ($FirstHashTable.ContainsKey($_.destinationColumn1)){
        $FirstHashTable[$_.destinationColumn1]
    } Else {
        'No MatchFound'
    }}} | Export-Csv "$destinationCsvFile-Temp" -NoType
Move-Item "$destinationCsvFile-Temp" $destinationCsvFile -Force
Write-Host "Complete."

目标文件的结果：

"destinationColumn1","destinationColumn2","destinationColumn3","destinationColumn4","destinationColumn5","destinationColumn6" ,"destinationColumn7"
"value1aa"          ,"value2aa"          ,"value3aa"          ,"sourceValue1"      ,"value5aa"          ,"AdValueFound1"      ,"sourceValueFound1"
"value1bb"          ,"sourceValue2"      ,"value3bb"          ,"value4bb"          ,"sourceValue2"      ,"AdValueFound2"      ,"No SourceValueFound"
"value1cc"          ,"sourceValue3"      ,"value3cc"          ,"value4cc"          ,"value5cc"          ,"No SourceValueFound","No SourceValueFound"

"destinationColumn1","destinationColumn2","destinationColumn3","destinationColumn4","destinationColumn5","destinationColumn6" ,"destinationColumn7"
"value1aa"          ,"value2aa"          ,"value3aa"          ,"sourceValue1"      ,"value5aa"          ,"AdValueFound1"      ,"No SourceValueFound"
"value1bb"          ,"sourceValue2"      ,"value3bb"          ,"value4bb"          ,"sourceValue2"      ,"AdValueFound2"      ,"sourceValueFound2"
"value1cc"          ,"sourceValue3"      ,"value3cc"          ,"value4cc"          ,"value5cc"          ,"No SourceValueFound","No SourceValueFound"

如我们所见，这并没有在

destinationColumn7

下的

sourceValueFound#

中追加最后两行。相反，它们是

未找到SourceValueFound

接下来，我注意到

sourceValue

在源文件的另一列中，而

sourceValueFound

不是

$null

所以我修改了密码

$sourceCsvFile = 'C:\Temp\test1.csv'
$destinationCsvFile = 'C:\Temp\test2.csv'

Write-Host "Creating hash table with columns `"sourceColumn1`" and `"sourceColumn8`" From $sourceCsvFile"
$FirstHashTable = @{}
Import-Csv $sourceCsvFile | ForEach-Object {
$FirstHashTable[$_.sourceColumn1] = If ($_.sourceColumn8) {$_.sourceColumn8} Else {'No SourceValueFound'}}
Write-Host "Complete."

Write-Host "Creating hash table with columns `"sourceColumn6`" and `"sourceColumn8`" From $sourceCsvFile"
$SecondHashTable = @{}
Import-Csv $sourceCsvFile | ForEach-Object {
$SecondHashTable[$_.sourceColumn6] = If ($_.sourceColumn8) {$_.sourceColumn8} Else {'No SourceValueFound'}
}
Write-Host "Complete."


Write-Host "Appending new destinationColumn7 column from hash table"
(Import-Csv $destinationCsvFile) |
    Select-Object -Property *, @{n='destinationColumn7';e={
    If (($FirstHashTable.ContainsKey($_.destinationColumn4)) -and ($FirstHashTable.ContainsKey($_.destinationColumn4) -ne 'No SourceValueFound')) {
        $FirstHashTable[$_.destinationColumn4]
    } ElseIf (($FirstHashTable.ContainsKey($_.destinationColumn5)) -and ($FirstHashTable.ContainsKey($_.destinationColumn5) -ne 'No SourceValueFound')){
        $FirstHashTable[$_.destinationColumn5]
    } ElseIf (($FirstHashTable.ContainsKey($_.destinationColumn2)) -and ($FirstHashTable.ContainsKey($_.destinationColumn2) -ne 'No SourceValueFound')){
        $FirstHashTable[$_.destinationColumn2]
    } ElseIf ($SecondHashTable.ContainsKey($_.destinationColumn4)){
        $SecondHashTable[$_.destinationColumn4]
    } ElseIf ($SecondHashTable.ContainsKey($_.destinationColumn5)){
        $SecondHashTable[$_.destinationColumn5]
    } ElseIf ($SecondHashTable.ContainsKey($_.destinationColumn2)){
        $SecondHashTable[$_.destinationColumn2]
    } Else {
        'No MatchFound'
    }}} | Export-Csv "$destinationCsvFile-Temp.csv" -NoType
Write-Host "Complete."

目标文件的结果：

"destinationColumn1","destinationColumn2","destinationColumn3","destinationColumn4","destinationColumn5","destinationColumn6" ,"destinationColumn7"
"value1aa"          ,"value2aa"          ,"value3aa"          ,"sourceValue1"      ,"value5aa"          ,"AdValueFound1"      ,"sourceValueFound1"
"value1bb"          ,"sourceValue2"      ,"value3bb"          ,"value4bb"          ,"sourceValue2"      ,"AdValueFound2"      ,"No SourceValueFound"
"value1cc"          ,"sourceValue3"      ,"value3cc"          ,"value4cc"          ,"value5cc"          ,"No SourceValueFound","No SourceValueFound"

"destinationColumn1","destinationColumn2","destinationColumn3","destinationColumn4","destinationColumn5","destinationColumn6" ,"destinationColumn7"
"value1aa"          ,"value2aa"          ,"value3aa"          ,"sourceValue1"      ,"value5aa"          ,"AdValueFound1"      ,"No SourceValueFound"
"value1bb"          ,"sourceValue2"      ,"value3bb"          ,"value4bb"          ,"sourceValue2"      ,"AdValueFound2"      ,"sourceValueFound2"
"value1cc"          ,"sourceValue3"      ,"value3cc"          ,"value4cc"          ,"value5cc"          ,"No SourceValueFound","No SourceValueFound"

现在，它在目标文件的第二行添加了

sourceValueFound 35;

，但对于

destinationColumn7

，第三行仍然是

No sourceValueFound

---

任何能帮我填补我所缺少的内容的人都将不胜感激。

我找到了答案，我没有跳过包含

'No SourceValueFound'

值的键，因为我使用的是

（$FirstHashTable.ContainsKey（$\u.destinationColumn4）-ne'No SourceValueFound'）

（$FirstHashTable>）[$\.destinationColumn4]-ne'No SourceValueFound'）

然后，我必须将其添加到其他3个ElseIf语句中，以确保在确保

'No SourceValueFound'

正确之前，先检查所有非

'No SourceValueFound'

值

$sourceCsvFile = 'C:\Temp\test1.csv'
$destinationCsvFile = 'C:\Temp\test2.csv'

Write-Host "Creating hash table with columns `"sourceColumn1`" and `"sourceColumn8`" From $sourceCsvFile"
$FirstHashTable = @{}
Import-Csv $sourceCsvFile | ForEach-Object {
    $FirstHashTable[$_.sourceColumn1] = If ($_.sourceColumn8) {$_.sourceColumn8} Else {'No SourceValueFound'}}
Write-Host "Complete."

Write-Host "Creating hash table with columns `"sourceColumn6`" and `"sourceColumn8`" From $sourceCsvFile"
$SecondHashTable = @{}
Import-Csv $sourceCsvFile | ForEach-Object {
    $SecondHashTable[$_.sourceColumn6] = If ($_.sourceColumn8) {$_.sourceColumn8} Else {'No SourceValueFound'}}
Write-Host "Complete."


Write-Host "Appending new destinationColumn7 column from hash table"
(Import-Csv $destinationCsvFile) |
    Select-Object -Property *, @{n='destinationColumn7';e={
If (($FirstHashTable.ContainsKey($_.destinationColumn4)) -and ($FirstHashTable[$_.destinationColumn4] -ne 'No SourceValueFound')) {
        $FirstHashTable[$_.destinationColumn4]
    } ElseIf (($FirstHashTable.ContainsKey($_.destinationColumn5)) -and ($FirstHashTable[$_.destinationColumn5] -ne 'No SourceValueFound')){
        $FirstHashTable[$_.destinationColumn5]
    } ElseIf (($FirstHashTable.ContainsKey($_.destinationColumn2)) -and ($FirstHashTable[$_.destinationColumn2] -ne 'No SourceValueFound')){
        $FirstHashTable[$_.destinationColumn2]
    } ElseIf (($SecondHashTable.ContainsKey($_.destinationColumn4)) -and ($SecondHashTable[$_.destinationColumn4] -ne 'No SourceValueFound')){
        $SecondHashTable[$_.destinationColumn4]
    } ElseIf (($SecondHashTable.ContainsKey($_.destinationColumn5)) -and ($SecondHashTable[$_.destinationColumn5] -ne 'No SourceValueFound')){
        $SecondHashTable[$_.destinationColumn5]
    } ElseIf (($SecondHashTable.ContainsKey($_.destinationColumn2)) -and ($SecondHashTable[$_.destinationColumn2] -ne 'No SourceValueFound')){
        $SecondHashTable[$_.destinationColumn2]
    } ElseIf ($FirstHashTable.ContainsKey($_.destinationColumn4)) {
        $FirstHashTable[$_.destinationColumn4]
    } ElseIf ($FirstHashTable.ContainsKey($_.destinationColumn5)){
        $FirstHashTable[$_.destinationColumn5]
    } ElseIf ($FirstHashTable.ContainsKey($_.destinationColumn2)){
        $FirstHashTable[$_.destinationColumn2]
    } Else {
        'No MatchFound'
    }}} | Export-Csv "$destinationCsvFile-Temp.csv" -NoType
Write-Host "Complete."

现在工作