CURRENT_TIMESTAMP on UPDATE CURRENT_TIMESTAMP in the table definition

Hi, I am trying to migrate from mysql to vertica.
   
In mysql, the db provides the functionality to update the table timestamps automatically by using 'ON UPDATE' construct 
For eg: In Mysql
create <table.name>(
<column_name> timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP);

Does a similar functionality exists in Vertica?

Else do I need to include(Insert/Update) CURRENT_TIMESTAMP in each of the update statement

Thanks in advance