Regex for case sensitive alphabets

[GJNom]

I saw this question and tried it myself too. The correct answer is option D and it actually works, but I am not able to understand why it works. The names for input into Regex are in uppercase and I have read that [a-z] is for lowercase alphabets. Could anyone please explain me why the below is working?

Thanks

Gaurav

[atcodedog05]

Hi @GJNom 

It works because Regex tool by default is configured be case insensitive. Hence upper case and lower case are treated as same.

Hope this helps 🙂

[GJNom]

Ahh, what a silly mistake on my side. I ignored that check box. 😋 Can you believe it?

Thanks mate

[atcodedog05]

Happens 😅 there is always first time you find out something 

[SeanAdams]

Case sensitivity is also a flag for a regex that you can turn on or off irrespective of the Alteryx checkbox - I think it may be /i

Regex101.com is a great resource to play with Regex if you're struggling a little - it's saved my sanity many times!