Why You Should Blend Instead of Join in Tableau

Why You Should Blend Instead of Join in Tableau

Data blending in Tableau is the operation of combining multiple data sources into the same view by finding common fields between them to join on. Unlike an ordinary join, which combines data sources at the lowest granularity before any aggregation is done, a data blend can join data sources after aggregation is performed on the individual sources; ultimately limiting the number of records that...

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How to Prepare for the Tableau Desktop Qualified Associate Exam for Free

How to Prepare for the Tableau Desktop Qualified Associate Exam for Free

I recently took the Tableau Desktop Qualified Associate Exam and passed it without spending anything on preparation materials. Having taken other certification exams before, I knew that study guides issued by exam providers don’t always provide the most thorough methods of preparation. In preparing for this exam, I was unsure about the best approach for studying, and ended up exhausting the...

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Refining Your SQL Wizardry

Refining Your SQL Wizardry

Consulting in data analytics is a demanding profession that requires both broad and deep technical knowledge in a variety of tools and technologies. One key skillset expected of just about any analytics consultant is the ability to retrieve data from a source system and manipulate it to fit the client’s needs.…

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