Question

所以我有下面的代码可以很好地工作，但由于某种原因，它只计算我的D：驱动器而不是我的C：驱动器？

;WITH cte AS (
  SELECT [ID], [Time], [Area], [Name],
     row_number() OVER(PARTITION BY [Area] ORDER BY [Time] desc) AS [rn]
  FROM [AreaTable] WHERE ID=1
)
SELECT [ID], [Time], [Area], [Name] FROM cte WHERE [rn] = 1

Answer 1

好像你需要制作一个数组。试试这个......

$computerName = Get-Wmiobject Win32_ComputerSystem
$computerOS = Get-Wmiobject Win32_OperatingSystem
$computerHDD = Get-Wmiobject Win32_LogicalDisk -Filter drivetype=3

$output = @()
ForEach($HDD in $computerHDD){
$txtObject = New-Object PSObject -property @{
    'ComputerName' = $computerName.Name
    'ComputerModel' = $computerName.Model
    'SerialNumber' = $computerName.SerialNumber
    'HDDSize' = "{0:N2}" -f ($HDD.Size/1GB)
    'HDDFree' = "{0:P2}" -f ($HDD.FreeSpace/$HDD.Size)
    'OS' = $computerOS.caption
    'OS_type' = $computerOS.OSArchitecture
    'User' = $computerName.UserName
    } 
    $output += $txtObject
}
$output | Select-Object ComputerName, ComputerModel, SerialNumber, HDDSize, HDDFree, OS, Os_type, User | Out-File "$PSSCriptRoot\computer_info.txt" -Append

Answer 2

你在循环的每次迭代中都覆盖$txtObject，所以你的输出只包含最后一次迭代的驱动。相反，您应该将$txtObject初始化为数组，然后将每个驱动器的信息附加到该数据：

$computerHDD = Get-Wmiobject Win32_LogicalDisk -Filter drivetype=3

$txtObject = @()
ForEach($HDD in $computerHDD){
    $txtObject += New-Object PSObject -property @{
        # ...
    } 
}
$txtObject | Select-Object ... | Out-File "$PSSCriptRoot\computer_info.txt" -Append

更好的是，你可以消除循环和变量，只需使用管道：

$computerName = Get-WmiObject Win32_ComputerSystem
$computerOS = Get-WmiObject Win32_OperatingSystem

Get-WmiObject Win32_LogicalDisk -Filter drivetype=3 `
    | ForEach-Object -Process {
        New-Object PSObject -Property @{
            'ComputerName'  = $computerName.Name
            'ComputerModel' = $computerName.Model
            'SerialNumber'  = $computerName.SerialNumber
            'HDDSize'       = "{0:N2}" -f ($_.Size/1GB)
            'HDDFree'       = "{0:P2}" -f ($_.FreeSpace/$_.Size)
            'OS'            = $computerOS.caption
            'OS_type'       = $computerOS.OSArchitecture
            'User'          = $computerName.UserName
        };
    } | Out-File "$PSSCriptRoot\computer_info.txt" -Append

请注意，上面的New-Object几乎与原始代码完全相同，但必须使用$_代替$HDD。

powershell驱动计算器

2 个答案: