从函数调用函数时从PowerShell连接到SQL Server数据库

Question

我正在使用PowerShell脚本。我有一些高级的

1. 筛选器$server和$instance名称来自.txt文件。
2. 使用$server并于2功能连接到SQL Server

我的.txt文件的代码$instance情况如下

[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.SMO") | Out-Null 

# Get our list of target servers from the local servers.txt file(Need 
$servers = Get-Content 'mirroringserver.txt' 

foreach ($prcs in $servers) { 
    # The first entry in the file is the machine name, the second is the instance name so separate them 
    #$srvc = $prcs.Split($prcs, "\r\n") 
    # $ServerName = $prcs 
    $srvc = $prcs.Split('\') 

    $servers = $srvc[0] 
    $instance = $srvc[1] 
    GetConnectionString $servers $instance 
    # Ping the machine to see if it's on the network 
    $results = gwmi -query "select StatusCode from Win32_PingStatus where Address = '$servers'" 

    $responds = $false 
    foreach ($result in $results) { 
     # If the machine responds break out of the result loop and indicate success 
     if ($result.StatusCode -eq 0) { 
      $responds = $true 
      break 
     } 
    } 

    if ($responds) { 
     # Check to see if a directory exists for this machine, if not create one 
     if (!(Test-Path -Path .\$servers)) { 
      New-Item .\$servers\ -Type Directory 
     } 

     # Get the server info in the first function and the instance info in the second 

     #mirroring $servers $instance 
     getInsertServerStatus $servers $instance 
    } else { 
     # Let the user know we couldn't connect to the server 
     Write-Output "$servers does not respond" 
    } 
} 

function GetConnectionString([string]$svr, [string]$inst) { 
    return "Server=$svr\$inst;Database=master;Integrated Security=True;" 
} 

这是我的功能1：

function mirroring(
    $svr, 
    $inst, 
    [string] $datastore, 
    [string] $datastore1, 
    [string] $datastore2, 
    [string] $datastore3, 
    [string] $datastore4, 
    [string] $datastore5, 
    [string] $datastore6, 
    [string] $datastore7 
) { 
    $SqlConnection = New-Object System.Data.SqlClient.SqlConnection 
    $SqlConnection.ConnectionString = GetConnectionString 
    $SqlConnection.Open() 
    $SqlCmd = New-Object System.Data.SqlClient.SqlCommand 
    $SqlCmd.CommandText = " SELECT db_name(sd.[database_id])AS [Database Name] 
      ,sd.mirroring_state     AS [Mirror State Number] 
      ,sd.mirroring_state_desc    AS [Mirror State] 
      ,sd.mirroring_partner_name   AS [Partner Name] 
      ,sd.mirroring_role_desc    AS [Mirror Role] 
      ,sd.mirroring_safety_level_desc  AS [Safety Level] 
      ,sd.mirroring_witness_name   AS [Witness] 
      ,sd.mirroring_connection_timeout AS [Timeout(sec)] 
     FROM sys.database_mirroring AS sd 
     WHERE mirroring_guid IS NOT null 
     ORDER BY [Database Name];" 
    $SqlCmd.Connection = $SqlConnection 
    $SqlAdapter = New-Object System.Data.SqlClient.SqlDataAdapter 
    $SqlAdapter.SelectCommand = $SqlCmd 
    $DataSet = New-Object System.Data.DataSet 
    $SqlAdapter.Fill($DataSet) 
    $DataSet.Tables[0] 
    $SqlConnection.Close() 
    $datastore = $DataSet.Tables[0].Rows[0][0] 
    $datastore1 = $DataSet.Tables[0].Rows[0][1] 
    $datastore2 = $DataSet.Tables[0].Rows[0][2] 
    $datastore3 = $DataSet.Tables[0].Rows[0][3] 
    $datastore4 = $DataSet.Tables[0].Rows[0][4] 
    $datastore5 = $DataSet.Tables[0].Rows[0][5] 
    $datastore6 = $DataSet.Tables[0].Rows[0][6] 
    $datastore7 = $DataSet.Tables[0].Rows[0][7] 
    $script:ServerStatus1 = "DataBase Name:"+ $datastore+",Mirror State Number"+$datastore1+",Mirror State"+$datastore2+",Partner Name"+$datastore3+",Mirror Role"+$datastore4+",Safety Level"+$datastore5+",Witness"+$datastore6+",Timeout(In Sec)"+$datastore7 
    return $script:ServerStatus1 
} 

这是我的功能2：

function getInsertServerStatus(
    $svr1, 
    $inst2, 
    $ServerName = $svr1+"\"+$inst2, 
    $RemActonToBeTaken = 0, 
    $ServerStatus 
) { 
    mirroring 
    $Script:ServerStatus1 
    $Script:ServerStatus= $ServerStatus1 

    Write-Host "ServerName=$ServerName" 
    Write-Host "InstanceName=$inst2" 
    Write-Host "ServerStatus=$ServerStatus1" 
    Write-Host "RemActonToBeTaken=$RemActonToBeTaken" 

    $SqlConnection1 = New-Object System.Data.SqlClient.SqlConnection 
    $SqlConnection1.ConnectionString = "Server=$svr1\$inst2;Database=master;Integrated Security=True;" 
    $SqlConnection1.Open() 
    $SqlCmd1 = New-Object System.Data.SqlClient.SqlCommand 
    $SqlCmd1.CommandText = "USP_RemedialActionDetails" 
    $SqlCmd1.Connection = $SqlConnection1 
    $SqlCmd1.CommandType = [System.Data.CommandType]::StoredProcedure 

    $InParameter1 = New-Object System.Data.SqlClient.SqlParameter; 
    $InParameter1 = $SqlCmd1.Parameters.Add("@ServerName" , [System.Data.SqlDbType]::String) 
    $InParameter1.Value = $ServerName 
    $InParameter1.Direction = [System.Data.ParameterDirection]"Input"; 

    $InParameter2 = New-Object System.Data.SqlClient.SqlParameter; 
    $InParameter2=$SqlCmd1.Parameters.Add("@InstanceName" , [System.Data.SqlDbType]::String) 
    $InParameter2.Value = $inst2 
    $InParameter2.Direction = [System.Data.ParameterDirection]"Input"; 

    $InParameter3 = New-Object System.Data.SqlClient.SqlParameter; 
    $InParameter3=$SqlCmd1.Parameters.Add("@ServerStatus" , [System.Data.SqlDbType]::String) 
    $InParameter3.Value = $ServerStatus1 
    $InParameter3.Direction = [System.Data.ParameterDirection]"Input"; 

    $InParameter4 = New-Object System.Data.SqlClient.SqlParameter; 
    $InParameter4=$SqlCmd1.Parameters.Add("@RemActionToBeTaken" , [System.Data.SqlDbType]::String) 
    $InParameter4.Value = $RemActonToBeTaken 
    $InParameter4.Direction = [System.Data.ParameterDirection]"Input"; 

    $result = $SqlCmd1.ExecuteNonQuery() 
    Write "result=$result" 
    $SqlConnection1.Close() 
    $SQLCmd1.Dispose() | Out-Null 
} 

我在调用功能mirroring内部功能getInsertServerStatus。 连接字符串进入函数（mirroring）连接错误，因为未找到$server和$instance名称。

Answer 1

有一个在你的代码的一些错误：

第一，在函数内部getInsertServerStatusyou你叫镜像没有传递参数$ SVR $研究所.... 它应该是：

mirroring $svr1 $inst1 ... other parameters 

second, Inside the function **mirroring** you call **GetConnectionString** 

没有传递参数$服务器$实例 它应该是：

GetConnectionString $svr $inst 

在主程序调用GetConnectionString $服务器$实例，你不返回值传递给一个变量，在你的代码没有任何影响，删除此行

，用建议的代码修改代码。