In Cassandra, for tables we can write a comment as follows:
CREATE TABLE company.address(
id int PRIMARY KEY,
street text,
...
) WITH COMMENT = 'Table containing the address of company
id - unique identifier of a company,
street - street of the company';
But for UDT(user defined type) I can't find if there is a way for writing a comment where I want to provide a description for each field of UDT. Is that possible in Cassandra ?
Comments for columns are not possible in cassandra 3.x (latest available version).
Jira Ticket for the same CASSANDRA-9836.
As of now best bet is to use self explanatory column names.