-- 开启表头显示
.headers on

-- 设置列的宽度
.mode column

-- 插入数据到用户登录表
insert into record_of_operations
    (oper_user_name,operation_detail, operation_time)
values
    ('admin', 'led:on', 'null');

-- 显示用户登录表的数据
select * from record_of_operations;