Check if an individual string[a] is a substring of another string[b], and apply condition based on result. (DAX)
This will help find if a string (string a) is a substring of another separate string (string b), also show you how to form a condition based on the result. Like if 'a' is substring of 'b' then do this else do that.

Find aging days from stock date and current date. (DAX)
Sometimes we need to calculate aging days or duration of aging when making Bi for stock. This is how I do it.