create table t_tasks6
(
id bigint auto_increment not null,
task_name varchar2(100) not null,
task_start_time datetime not null,
task_end_time datetime null,
task_real_start_time datetime null,
task_real_end_time datetime null,

created_at timestamp null,
updated_at timestamp null,
constraint t_tasks6_id_pk primary key ( id )
)