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Check if id from column exists without ended by number inside string in another table column

I have two tables, firstone identifiants, which has id column as below :


second table informations, which has information id column as below:


I added a custom column check in identifiants table to check if id exists (TRUE) or not (FALSE) in information id column in informations tabe, with the formula :




All id return True even 352A5KL doesn't exist alone, also 75GH235 and 556LK459 ended by numbers, its should return False.

It should return True if the id is ended by lettrers, /, ?, ! or other symbols but not numbers.

It should return False if the id doesn't exist or it is ended by numbers.

the result that I want :


NB. I find the solution by using Python, but a lot of people don't want installing Python or other software, they want solution by using only Excel/Power Query


@miguel @ImkeF @Greg_Deckler 















Community Admin
Community Admin

This appears to be a duplicate of the thread below which is already solved:

Solved: Check if substring from column exists inside strin... - Microsoft Power BI Community

This one was my previous question, but this one is different, please read again the description, I solved by Python but my client doesn't want install Python, my want use power query instead 

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