Timestamp null default current_timestamp
- Timestamp not null default current_timestamp
- Timestamp not null default current_timestamp postgres
- Mysql timestamp not null default current_timestamp
- Created_at timestamp not null default current_timestamp
- Timestamp not null default current_timestamp on update current_timestamp
- Oracle timestamp not null default current_timestamp
- Timestamp null default current_timestamp on update current_timestamp
- Timestamp(6) not null default current_timestamp(6)