If an input column for a function can have data type VARCHAR, it can also have VARCHAR (n) and CLOB.
If an input column for a function can have data type NUMERIC, it can also have NUMERIC (n [, m]).
If an input column for a function can have data type VARCHAR, it can also have VARCHAR (n) and CLOB.
If an input column for a function can have data type NUMERIC, it can also have NUMERIC (n [, m]).