Tableau Interview Questions and Answers Set 10

  1. How to remove ‘All’ options from a Tableau auto-filter?

The auto-filter provides a feature of removing ‘All’ options by simply clicking the down arrow in the auto-filter heading. You can scroll down to ‘Customize’ in the dropdown and then uncheck

  1. How can you display the top five and last five sales in the same view?

Create two sets, one for top 5 another for bottom 5 and the join these two sets displaying a unique set of total 10 rows.

  1. What is TDE file?

TDE is a Tableau desktop file that contains a .tde extension. It refers to the file that contains data extracted from external sources like MS Excel, MS Access or CSV file.

There are two aspects of TDE design that make them ideal for supporting analytics and data discovery.

Firstly, TDE is a columnar store.

The second is how they are structured which impacts how they are loaded into memory and used by Tableau. This is an important aspect of how TDEs are “architecture aware”. Architecture-awareness means that TDEs use all parts of your computer memory, from RAM to hard disk, and put each part to work what best fits its characteristics.

  1. How can you display the top five and last five sales in the same view?

Create two sets, one for top 5 another for bottom 5 and the join these two sets displaying a unique set of total 10 rows.

  1. State limitations of parameters in Tableau.

Parameters facilitate only four ways to represent data on a dashboard (which are seven in quick filters). Further, parameters do not allow multiple selections in a filter.

  1. How do you handle Null Values?

Null values along an axis are indicated in the lower right corner of the view. Click the indicator to open a dialog box that will help you decide how to handle these values. The options available in the dialog box depend on the type of data in the view.

  1. What type of data limitations does Tableau Public have?

Tableau Public can only connect to few data sources like Microsoft Excel, Microsoft Access, and multiple text file formats. It has a limit of 1,000,000 rows of data that is allowed in any single file.

  1. What are the Limitations of context filters?
  • The context filter is not frequently changed by the user – if the filter is changed the database must re-compute and rewrite the temporary table, slowing performance.
  • When you set a dimension to context, Tableau creates a temporary table that will require a reload each time the view is initiated.
  1. How to use group in the calculated field?
  • By adding the same calculation to ‘Group By’ clause in SQL query or creating a Calculated Field in the Data Window and using that field whenever you want to group the fields.
  • Using groups in a calculation. You cannot reference ad-hoc groups in a calculation.
  • Blend data using groups created in the secondary data source: Only calculated groups can be used in data blending if the group was created in the secondary data source.
  • Use a group in another workbook. You can easily replicate a group in another workbook by copy and pasting a calculation.

100. However, do I automatize reports victimization Tableau software?

You need to publish report back to tableau server, whereas publication you may realize one choice to schedule reports. You just have to compel to choose the time once you wish to refresh knowledge.