Question

我正在尝试从sql server从两个不同的查询中提取数据，并在我的Powershell ISE中显示结果。无论我尝试什么，第二个数据集都不显示，或者query2中的列被追加到query1的列中，然后显示。

$SqlConnection = New-Object System.Data.SqlClient.SqlConnection
$SqlAdapter = New-Object System.Data.SqlClient.SqlDataAdapter
$SqlCmd = New-Object System.Data.SqlClient.SqlCommand
$DataSet = New-Object System.Data.DataSet

$SqlConnection.ConnectionString = "MyConnectionString"

Write-output `r`r "Query 1"

$SQLQuery = "SELECT columnset
               FROM table1;"

$SqlConnection.Open()
$SqlCmd.CommandText = $SQLQuery
$SqlCmd.Connection = $SqlConnection
$SqlAdapter.SelectCommand = $SqlCmd
$DataSet = New-Object System.Data.DataSet
$SqlAdapter.Fill($DataSet)
$DataSet.Tables[0] 
$SqlConnection.Close()

Write-output `r`r "Query 2"

$SQLQuery2 = "SELECT columnset
               FROM table2;"

$SqlConnection.Open()
$SqlCmd.CommandText = $SQLQuery
$SqlCmd.Connection = $SqlConnection
$SqlAdapter.SelectCommand = $SqlCmd
$SqlAdapter.Fill($DataSet)
$DataSet.Tables[0]
$SqlConnection.Close()

如何在我使用数据集之间清除表结构，以便只返回我想要的列？

Answer 1

尝试类似这样的事情

$SqlConnection = New-Object System.Data.SqlClient.SqlConnectio
$SqlCmd = New-Object System.Data.SqlClient.SqlCommand


$SqlConnection.ConnectionString = "MyConnectionString"

Write-output `r`r "Query 1"

$SQLQuery = "SELECT columnset FROM table1;"

$SqlAdapter = New-Object System.Data.SqlClient.SqlDataAdapter
$DataSet = New-Object System.Data.DataSet
$SqlConnection.Open()
$SqlCmd.CommandText = $SQLQuery
$SqlCmd.Connection = $SqlConnection
$SqlAdapter.SelectCommand = $SqlCmd
$SqlAdapter.Fill($DataSet)
$DataSet.Tables[0] 
$SqlConnection.Close()

Write-output `r`r "Query 2"

$SQLQuery2 = "SELECT columnset FROM table2;"

$SqlAdapter = New-Object System.Data.SqlClient.SqlDataAdapter
$DataSet = New-Object System.Data.DataSet
$SqlConnection.Open()
$SqlCmd.CommandText = $SQLQuery
$SqlCmd.Connection = $SqlConnection
$SqlAdapter.SelectCommand = $SqlCmd
$DataSet = New-Object System.Data.DataSet
$SqlAdapter.Fill($DataSet)
$DataSet.Tables[0]
$SqlConnection.Close()

Answer 2

您可以尝试这样的事情：

$SQLSERVER="db_server"
$Database="DB"
$SqlConnection = New-Object System.Data.SqlClient.SqlConnection ("Server=$SQLSERVER;Database=$DATABASE;Integrated Security=True")
$SqlConnection.open()
if ($SqlConnection.State -eq 1){
    $SqlCmd = New-Object System.Data.SqlClient.SqlCommand
    $SQLCmd.Connection = $SQLConnection
    $SqlAdapter = New-Object System.Data.SqlClient.SqlDataAdapter
    $DataSet = New-Object System.Data.DataSet
}else{
    Write-Host "Unable to connect to Database"
    Exit
}


$sql = @'
Select * FROM Table_1;
Select * FROM Table_2;
'@


$SqlCmd.CommandText  = $sql
$SqlAdapter.SelectCommand = $SqlCmd
$count = $SqlAdapter.Fill($DataSet)

$DataSet.Tables[0] | Export-CSV $file1 -NoTypeInformation

$DataSet.Tables[1] | Export-CSV $file2 -NoTypeInformation

Powershell如何从数据集中清除表结构

2 个答案: