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Here is an easy approach to extracting the data model from a Qlik Sense (QVF) or QlikView (QVW) file. The example documented uses Qlik Sense Desktop, if you are using QlikView then please click here.
Most of the setup can be managed using variables from the front sheet of the application. However there are two steps that will require the user to update some things manually as indicated clearly in the steps below.
Why would you use or need this kind of technique?
In a production environment you may find use of the output table script elements without the variables as they can be useful in load processes when transformed QVDs can be re-used by other applications. However, there are many times where you need to create something quickly for an ad-hoc piece of work or as a demonstration to show a customer with amended data to make it more relevant (changing product, department names etc). This approach can also be useful when working offline on the front end or application tuning where you do not want to deal with all of the complications of the ETL process.
Setup Requirements:
- Qlik Sense Desktop
- The following extensions from branch.qlik.com
Please note the following instructions are also included in the dashboard itself in case you forget where it came from.
Step 1 - Update the 'QlikSenseApps' data connection in the data load editor window
- Open the Data Load Editor in a new window by clicking the icon identified below.
- On the right you will see Data Connections, click on the edit button of the 'QlikSenseApps' Connection
- Repoint the C:\ drive reference to your local QlikSenseApps folder. e.g. C:\Users\{user}\Documents\Qlik\Sense\Apps
- Return to the Dashboard.
Step 2 - Update the file name of the Qlik Sense or QlikView application from which you wish to extract data.
- Enter the name of the file from which you wish to extract data.
- This can be a Qlik Sense (QVF) or QlikView (QVW) application.
- Please ensure you include the .qvf or .qvw suffix.
e.g. Executive Dashboard.qvf
Step 3 - Create a folder location as a subfolder of the data connection folder and edit 'vDataDir' variable.
- Create the folder in windows explorer as a subfolder of that referenced as the data connection in step 1.
- Update the vDataDir variable with your new folder mapping.
- This is where you will store the output files.
- for example, QVD/Executive Dashboard where I have two levels of subfolders; QVD and Executive Dashboard.
Step 4 - Select the type of output you require.
- Select the output type using the buttons. The choices are QVD (Qlik's proprietary data store format optimized to read into memory) or CSV format.
Step 5 - Save the application and then Reload using the button to the left.
There is no need to open the Data Manager or Data Load Editor windows to reload the application. Use this extension button instead.
Step 6 - Check you folder to see your CSV or QVD files (one for each table in your data model)
