I have several workbooks linked to the same set of CSV files. I use the same Power Query transform steps for each CSV file in each workbook. Instead of copying M code from the advanced editor of one workbook and pasting it into the advanced editor of another, is there somewhere I can store a "master" M code document? I would like to be able to link all workbooks to a single text file containing M code so that when I make changes in this master document the Power Query transformations are made in each linked workbook - similar to style sheets in css.
CodePudding user response:
See https://blog.crossjoin.co.uk/2014/02/04/loading-power-query-m-code-from-text-files/
let
//Load M code from text file
// https://blog.crossjoin.co.uk/2014/02/04/loading-power-query-m-code-from-text-files/
Source = Text.FromBinary(File.Contents("C:\directory\MyMCode.txt")),
//Evaluate the code from the file as an M expression
EvaluatedExpression = Expression.Evaluate(Source, #shared)
in
EvaluatedExpression
CodePudding user response:
Another approach to this is to use Dataflows. These are essentially queries stored in the Power BI Service that you can connect your Power BI files to.
Recommended reading:
https://radacad.com/what-are-the-use-cases-of-dataflow-for-you-in-power-bi