Login requirement in DB (uppercase letters or no)

Hello,

Could you please let me know if the user’s login and email must necessarily be added to the database in uppercase letters?

To create an account, I used the command
account create test test

Afterward, I checked the contents of the account table and saw that the username (“test”) was added in uppercase letters (“TEST”). How critical is it if usernames are added to the database using insert queries in lowercase, for example, during account registration?

I checked, and it works both ways.

You can safely use lowercase letters as well.