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PowerShell Scripting to Replicate SQL Analysis Services Data to MySQL

Write a simple PowerShell script to replicate SQL Analysis Services data to a MySQL database.

The CData Cmdlets for SQL Analysis Services offer live access to SQL Analysis Services data from within PowerShell. Using PowerShell scripts, you can easily automate regular tasks like data replication. This article will walk through using the CData Cmdlets for SQL Analysis Services and the CData Cmdlets for MySQL in PowerShell to replicate SQL Analysis Services data to a MySQL database.

After obtaining the needed connection properties, accessing SQL Analysis Services data in PowerShell and preparing for replication consists of four basic steps.

To connect, provide authentication and set the Url property to a valid SQL Server Analysis Services endpoint. You can connect to SQL Server Analysis Services instances hosted over HTTP with XMLA access. See the Microsoft documentation to configure HTTP access to SQL Server Analysis Services.

To secure connections and authenticate, set the corresponding connection properties, below. The data provider supports the major authentication schemes, including HTTP and Windows, as well as SSL/TLS.

  • HTTP Authentication

    Set AuthScheme to "Basic" or "Digest" and set User and Password. Specify other authentication values in CustomHeaders.

  • Windows (NTLM)

    Set the Windows User and Password and set AuthScheme to "NTLM".

  • Kerberos and Kerberos Delegation

    To authenticate with Kerberos, set AuthScheme to NEGOTIATE. To use Kerberos delegation, set AuthScheme to KERBEROSDELEGATION. If needed, provide the User, Password, and KerberosSPN. By default, the data provider attempts to communicate with the SPN at the specified Url.

  • SSL/TLS:

    By default, the data provider attempts to negotiate SSL/TLS by checking the server's certificate against the system's trusted certificate store. To specify another certificate, see the SSLServerCert property for the available formats.

You can then access any cube as a relational table: When you connect the data provider retrieves SSAS metadata and dynamically updates the table schemas. Instead of retrieving metadata every connection, you can set the CacheLocation property to automatically cache to a simple file-based store.

See the Getting Started section of the CData documentation, under Retrieving Analysis Services Data, to execute SQL-92 queries to the cubes.

Collecting SQL Analysis Services Data

  1. Install the module:

    Install-Module SSASCmdlets
  2. Connect to SQL Analysis Services:

    $ssas = Connect-SSAS -User $User -Password $Password -URL $URL
  3. Retrieve the data from a specific resource:

    $data = Select-SSAS -Connection $ssas -Table "Adventure_Works"

    You can also use the Invoke-SSAS cmdlet to execute pure SQL-92 statements:

    $data = Invoke-SSAS -Connection $ssas -Query 'SELECT * FROM Adventure_Works WHERE Fiscal_Year = @Fiscal_Year' -Params @{'@Fiscal_Year'='FY 2008'}
  4. Save a list of the column names from the returned data.

    $columns = ($data | Get-Member -MemberType NoteProperty | Select-Object -Property Name).Name

Inserting SQL Analysis Services Data into the MySQL Database

With the data and column names collected, you are ready to replicate the data into a MySQL database.

  1. Install the module:

    Install-Module MySQLCmdlets
  2. Connect to MySQL, using the server address and port of the MySQL server, valid user credentials, and a specific database with the table in which the data will be replicated:

    $mysql = Connect-MySQL -User $User -Password $Password -Database $Database -Server $Server -Port $Port
  3. Loop through the SQL Analysis Services data, store the values, and use the Add-MySQL cmdlet to insert the data into the MySQL database, one row at a time. In this example, the table will need to have the same name as the SQL Analysis Services resource (Adventure_Works) and to exist in the database.

    $data | % { $row = $_ $values = @() $columns | % { $col = $_ $values += $row.$($col) } Add-MySQL -Connection $mysql -Table "Adventure_Works" -Columns $columns -Values $values }

You have now replicated your SQL Analysis Services data to a MySQL database. This gives you freedom to work with SQL Analysis Services data in the same way that you work with other MySQL tables, whether that is performing analytics, building reports, or other business functions.

Notes

  • Once you have connected to SQL Analysis Services and MySQL in PowerShell, you can pipe command results to perform the replication in a single line:

    Select-SSAS -Connection $ssas -Table "Adventure_Works" | % { $row = $_ $values = @() $columns | % { $col = $_ $values += $row.$($col) } Add-MySQL -Connection $mysql -Table "Adventure_Works" -Columns $columns -Values $values }
  • If you wish to replicate the SQL Analysis Services data to another database using another PowerShell module, you will want to exclude the Columns, Connection, and Table columns from the data returned by the Select-SSAS cmdlet since those columns are used to help pipe data from one CData cmdlet to another:

    $columns = ($data | Get-Member -MemberType NoteProperty | Select-Object -Property Name).Name | ? {$_ -NotIn @('Columns','Connection','Table')}