How to extract only characters in Power BI?
To remove all numbers and show only characters in a string in Power BI, you should do the following:
Steps
At the Home tab, click on "Edit Queries".

- The
Power Query Editor would be Opened.
- From the left side, Select your table.
At the Add column tab, click on Custom Column.

Write the below formula based on your column name.
Extract only characters using Text.Select()
You can use Text.Select() to extract only characters from a string in Power BI
= Text.Select([String],{"A".."z"})
Extract only characters using Text.Remove()
Also, You can use Text.Remove() to extract only characters from a string in Power BI
= Text.Remove([String],{"0".."9"})
Get only Upper Case characters in Power BI
= Text.Select([String],{"A".."Z"})
Get only Lower Case characters in Power BI
= Text.Select([String],{"a".."z"})
Output

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