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PowerShell Scripting to Replicate SAP HANA Data to MySQL

Write a simple PowerShell script to replicate SAP HANA data to a MySQL database.

The CData Cmdlets for SAP HANA offer live access to SAP HANA 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 SAP HANA and the CData Cmdlets for MySQL in PowerShell to replicate SAP HANA data to a MySQL database.

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

Set the Server, Database and Port properties to specify the address of your SAP Hana database to interact with. Set the User and the Password properties to authenticate to the server.

Collecting SAP HANA Data

  1. Install the module:

    Install-Module SAPHANACmdlets
  2. Connect to SAP HANA:

    $saphana = Connect-SAPHANA -User $User -Password $Password -Server $Server -Database $Database
  3. Retrieve the data from a specific resource:

    $data = Select-SAPHANA -Connection $saphana -Table "Buckets"

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

    $data = Invoke-SAPHANA -Connection $saphana -Query 'SELECT * FROM Buckets WHERE Name = @Name' -Params @{'@Name'='TestBucket'}
  4. Save a list of the column names from the returned data.

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

Inserting SAP HANA 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 SAP HANA 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 SAP HANA resource (Buckets) and to exist in the database.

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

You have now replicated your SAP HANA data to a MySQL database. This gives you freedom to work with SAP HANA 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 SAP HANA and MySQL in PowerShell, you can pipe command results to perform the replication in a single line:

    Select-SAPHANA -Connection $saphana -Table "Buckets" | % { $row = $_ $values = @() $columns | % { $col = $_ $values += $row.$($col) } Add-MySQL -Connection $mysql -Table "Buckets" -Columns $columns -Values $values }
  • If you wish to replicate the SAP HANA 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-SAPHANA 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')}