【发布时间】：2015-12-24 07:57:25
【问题描述】：
我会尽我所能，尽可能简单地分解它。
到目前为止我的工作：
目前我有两个 csv 文件...
test1.csv
test1ColumnN,test1ColumnI,test1ColumnD,selectDomainOne,selectDomainTwo,selectDomainThree
asdf,asdf,asdf,,,
nValue1,iValue1,dValue1,sValue1,,
qwer,asdf,zxcv,,,
nValue2,iValue2,dValue2,,,
qwer,zxcv,asdf,lkjh,,
nValue3,iValue3,dValue3,sValue3,,
zxcv,qwer,asdf,,poiu,
nValue1,iValue1,dValue1,,sValue1,
nValue4,iValue4,dValue4,,sValue4,
asdf,qwer,zxcv,fghj,mnbv,
nValue5,iValue5,dValue5,,,
asdf,cvbn,erty,,,uytr
nValue7,iValue7,dValue7,,,sValue7
nValue8,iValue8,dValue8,,,sValue8
nValue9,iValue9,dValue9,,,sValue9
qwer,asdf,zxcv,poiu,lkjh,mnbv
test2.csv
DomainCatagories,test2ColumnS,test2ColumnA,test2ColumnN,test2ColumnI,test2ColumnD
DomainOne,sValue1,aValue1,nValue1,,dValueN
DomainOne,sValue2,aValue2,,iValue2,dValue2
DomainOne,sValue3,aValue2,nValue3,iValue3,dValue3
DomainTwo,sValue1,aValue2,,iValue1,dValueN
DomainTwo,sValue4,aValue1,nValue4,,dValueN
DomainTwo,sValue5,aValue1,nValue5,iValue5,dValue5
DomainThree,sValue7,aValue2,nValue7,iValue7,dValue7
DomainThree,sValue8,aValue1,nValue8,iValue8,dValue8
DomainThree,sValue9,aValue2,nValue9,iValue9,dValue9
现在我想添加一列（在 test2.csv 中）以匹配来自 test1.csv 和 test2.csv 的 sValue# 与条件（$_.DomainCatagories='DomainOne' from test2.csv）和（$_.selectDomainOne from test1.csv)
为此，我使用以下代码...
#Create Column
$domainNameOne = @{}
$domainNameOne = Import-Csv 'C:\Scripts\Tests\test1.csv' | Where-Object {$_.selectDomainOne} | Select-Object -Expand 'selectDomainOne'
(Import-Csv 'C:\Scripts\Tests\test2.csv') |
Select-Object -Property *, @{n='Test1sValues';e={
if($_.DomainCatagories -eq 'DomainOne'){
if(($domainNameOne -contains $_.test2ColumnS) -and ($_.test2ColumnS)){
$_.test2ColumnS
} Else {
'Not found in test1'
}}}} | Export-Csv "C:\Scripts\Tests\test2-Temp" -NoType
Move-Item "C:\Scripts\Tests\test2-Temp" 'C:\Scripts\Tests\test2.csv' -Force
代码运行后得到如下test2.csv(isCorrect)...
"DomainCatagories","test2ColumnS","test2ColumnA","test2ColumnN","test2ColumnI","test2ColumnD","Test1sValues"
"DomainOne","sValue1","aValue1","nValue1","","dValueN","sValue1"
"DomainOne","sValue2","aValue2","","iValue2","dValue2","Not found in test1"
"DomainOne","sValue3","aValue2","nValue3","iValue3","dValue3","sValue3"
"DomainTwo","sValue1","aValue2","","iValue1","dValueN",""
"DomainTwo","sValue4","aValue1","nValue4","","dValueN",""
"DomainTwo","sValue5","aValue1","nValue5","iValue5","dValue5",""
"DomainThree","sValue7","aValue2","nValue7","iValue7","dValue7",""
"DomainThree","sValue8","aValue1","nValue8","iValue8","dValue8",""
"DomainThree","sValue9","aValue2","nValue9","iValue9","dValue9",""
我有什么不起作用：
接下来我运行以下代码...
#Append Column
$domainNameThree = @{}
$domainNameThree = Import-Csv 'C:\Scripts\Tests\test1.csv' | Where-Object {$_.selectDomainThree} | Select-Object -Expand 'selectDomainThree'
(Import-Csv 'C:\Scripts\Tests\test2.csv') | % {
if($_.DomainCatagories -eq 'DomainThree'){
if(($domainNameThree -contains $_.test2ColumnS) -and ($_.test2ColumnS)){
$_.Test1sValues = $_.test2ColumnS
} Else {
$_.Test1sValues = 'Not found in test1'
}}} | Export-Csv "C:\Scripts\Tests\test2-Temp" -NoType
Move-Item "C:\Scripts\Tests\test2-Temp" 'C:\Scripts\Tests\test2.csv' -Force
它不是在正确的行中添加值，而是完全清空整个文件并将其保存为empty file。
最终目标
我希望代码生成的是这个（注意在最后一列的最后 3 行中填写的值）...
"DomainCatagories","test2ColumnS","test2ColumnA","test2ColumnN","test2ColumnI","test2ColumnD","Test1sValues"
"DomainOne","sValue1","aValue1","nValue1","","dValueN","sValue1"
"DomainOne","sValue2","aValue2","","iValue2","dValue2","Not found in test1"
"DomainOne","sValue3","aValue2","nValue3","iValue3","dValue3","sValue3"
"DomainTwo","sValue1","aValue2","","iValue1","dValueN",""
"DomainTwo","sValue4","aValue1","nValue4","","dValueN",""
"DomainTwo","sValue5","aValue1","nValue5","iValue5","dValue5",""
"DomainThree","sValue7","aValue2","nValue7","iValue7","dValue7","sValue7"
"DomainThree","sValue8","aValue1","nValue8","iValue8","dValue8","sValue8"
"DomainThree","sValue9","aValue2","nValue9","iValue9","dValue9","sValue9"
我在第二个代码 sn-p 中做错了什么？
【问题讨论】：
-
@RyanBemrose 该代码可通过两个给定文件重现。我看不出我的问题有什么问题。
-
对我来说似乎很好。 Ryan 可能对 MCVE 的 Minimal 部分有问题
-
在你不工作的例子中，你没有向管道传递任何东西。如果括号正确，
}} $_} | Export-Csv "C:\Scripts\Tests\test2-Temp" -NoType可以工作。那应该将更新的对象输出回管道。您还可以使用计算属性，例如 I have seen you do before 或Add-Member -
您还创建了
$domainNameThree = @{}一个空的哈希表。可能无关紧要，但您将其视为数组，因此$domainNameThree = @()是有道理的。 -
啊完美，谢谢马特。它完美地工作:)管道的通过是修复它的原因。另外，我必须在
}};$_} | Export-Csv中添加;。至于哈希与数组，我不确定哈希与数组是否也很重要，但我会对其进行更改并再次测试。无论如何，管道返回的缺失肯定是答案。再次感谢:)