Open source softwares - Tableau

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Lesson Description



Information extraction in Tableau makes a subset of information from the information source. This is helpful in expanding the exhibition by applying channels. It additionally helps in applying an elements of Tableau to information which may not be accessible in the information source like tracking down the particular qualities in the information. Be that as it may, the information extricate highlight is most often utilized for making a concentrate to be put away in the nearby drive for disconnected admittance by Tableau

Create an Extract

Extraction of data is done by following the menu - Data → Extract Data. It creates many options such as applying limits to how many rows to be extracted and whether to aggregate data for dimensions. The following screen shows the Extract Data option.

Applying Extract Filters

To separate a subset of information from the information source, you can make channels which will return just the significant columns. How about we consider the Sample Superstore informational index and make a concentrate. In the channel choice, pick Select from rundown and tick mark the checkbox an incentive for which you want to pull the information from the source

Adding New Data to Extract

To add more information for an all around made separate, you can pick the choice Data → Extract → Append Data from File. For this situation, peruse the document containing the information and snap OK to wrap up. Obviously, the number and datatype of segments in the document ought to be in a state of harmony with the current information.

Extract History

You can verify the history of data extracts to be sure about how many times the extract has happened and at what times. For this, you can use the menu - Data → Extract History.