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PowerShell でSybase Data データをCSV に落としてみた

標準PowerShell cmdlets を使ってSybase テーブルにアクセス。

CData Cmdlets Module for Sybase は、直感的なSybase データ連携を提供する標準cmdlet です。 本記事では、Sybase Cmdlets を使ったサンプルを提供します。

Creating a Connection to Your Sybase Data

To authenticate with Sybase, set User and Password. Additionally, set IntegratedSecurity; to true to use Windows authentication otherwise, Sybase authentication is used. Set the Server and Database properties. To secure connections with TLS/SSL, set Encrypt to true.

$conn = Connect-Sybase  -User "$User" -Password "$Password" -Server "$Server" -Database "$Database"

Selecting Data

Follow the steps below to retrieve data from the Products table and pipe the result into to a CSV file:

Select-Sybase -Connection $conn -Table Products | Select -Property * -ExcludeProperty Connection,Table,Columns | Export-Csv -Path c:\myProductsData.csv -NoTypeInformation

You will notice that we piped the results from Select-Sybase into a Select-Object cmdlet and excluded some properties before piping them into an Export-Csv cmdlet. We do this because the CData Cmdlets append Connection, Table, and Columns information onto each "row" in the result set, and we do not necessarily want that information in our CSV file.

The Connection, Table, and Columns are appended to the results in order to facilitate piping results from one of the CData Cmdlets directly into another one.

Deleting Data

The following line deletes any records that match the criteria:

Select-Sybase -Connection $conn -Table Products -Where "ProductName = Konbu" | Remove-Sybase

Inserting and Updating Data

The cmdlets make data transformation easy as well as data cleansing. The following example loads data from a CSV file into Sybase, checking first whether a record already exists and needs to be updated instead of inserted.

Import-Csv -Path C:\MyProductsUpdates.csv | %{
  $record = Select-Sybase -Connection $Sybase -Table Products -Where ("Id = `'"+$_.Id+"`'")
  if($record){
    Update-Sybase -Connection $sybase -Table Products -Columns ("Id","ProductName") -Values ($_.Id, $_.ProductName) -Where ("Id = `'"+$_.Id+"`'")
  }else{
    Add-Sybase -Connection $sybase -Table Products -Columns ("Id","ProductName") -Values ($_.Id, $_.ProductName)
  }
}

As always, our goal is to simplify the way you connect to data. With cmdlets users can install a data module, set the connection properties, and start building. Download Cmdlets and start working with your data in PowerShell today!

 
 
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