Functions in Tableau
Often, when we need to derive data, we may need to incorporate some built-in functions in Tableau. Functions are reusable, "callable" code that can be used in calculations. Functions also return some kind of value.
In the calculated field editor, there is a faint arrow on the right side of the rectangle. When you click on this, it will expand and show a Help box for functions that are supported in Tableau:
When you click on the dropdown of the help window, you will see a list of the function categories available:
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