MySQL case sensitivity table name on MacOS with case insensitive file system

Question

I have researched a lot and what I understand to make database tables name sensitive, you have to set the variable lower_case_table_names=0. Im on osX. I did this change in

Answer 1

However, for a particular database, the case sensitivity doesnt affect. I can use any case I will never receive errors. Why?

This is because this database is simply created with option of case-insensitivity (by default). You need first to put case-sensitive option in the top of sql create script before the database creation, so the DBMS takes care.