Data Query Source Change

[AleksandrMe]

Good day, 

I have a Power Bi Dataset which is extracting data from number of excel files, similar files from different sources. I have changed names of some columns in source file, but structure is the same. 

Is there a way to write a line in Advanced editor or similar to keep updating data considering old and new names of same columns?!

THnaks

Aleks 

[Jimmy801 · Accepted solution]

Hello @AleksandrMe 

once you merge two tables, the trigger is the column name. So to avoid problems here you have to find a logic to rename your columns before merging. If you have a rigid structure you could create list of the new columns names then apply a RenameColumns-functions that is considering the old names and your new list and nename them.

Another approach could be to create a table with two columns (old and new) and use this information to rename the columns. When using this approach you probably have to filter the table that you use before applying the renaming (that the old-column contains only values that in the table to be renamed are in)

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Have fun

Jimmy