Oracle Regex: Accept all kind of values from Varchar2

Question

in Oracle's SQL, what does this expression mean?

WHERE REGEXP_LIKE(firstname,'^[A-Za-z ,]+$');

And how can I change to permit any kind of Varchar2 values?

Thanks a lot in advance.

Luis

Littlefoot · Answer

It means that first name can have only lower and uppercase letters and a comma.

If you want to accept any character, remove the whole WHERE clause.