if {} elseif {}否则进行最终比较

Question

问：在输出到.csv文件之前，我需要一些关于如何使用if else if else条件比较的建议。

if $_.sideIndicator -eq "=>" output to test.csv 
else if $_.sideIndicator -eq "<=" output to test.csv
else echo "there is no changes" output to test.csv

目前的代码是：

clear-host
$northdb = Import-Csv "C:\temp\cep\Book1.csv" -Header "InstanceName", "DatabaseName" | Sort-object -Property "InstanceName", "DatabaseName" -Unique 
$sdb = Import-Csv "C:\temp\cep\Book2.csv" -Header "InstanceName", "DatabaseName"  |Sort-Object -Property "InstanceName", "DatabaseName" -Unique
Compare-Object $northdb $sdb -Property  "InstanceName", "DatabaseName" -PassThru |  Where-Object{$_.SideIndicator -eq '=>'} | Select-Object  "InstanceName", "DatabaseName" | export-csv C:\temp\cep\gogo.csv -NoTypeInfo

Answer 1

应该是这样的：

if ($_.sideIndicator -eq "=>")
    {$Something| export-csv "C:\csvPath"}
elseif ($_.sideIndicator -eq "<=")
    {$Something| export-csv "C:\csvPath"}
else
    {Write-Output "there is no changes"}