insert into DEPARTMENT
    (DEPT_CODE,START_DATE,END_DATE,DEPT_NAME,LAYER,UP_DEPT_CODE,VALID_FLG,UPDATE_USER_NAME,USER_UPDATE_DATETIME)
values
    ('B300','2023-04-01', NULL,'新設部門',2,'1000','1','SYSTEM','2023-04-01 00:00:00');
update DEPARTMENT set 
    END_DATE = '2023-03-31',
    VALID_FLG = '0',
    UPDATE_USER_NAME = 'ORG_CHG',
    USER_UPDATE_DATETIME = '2023-03-31 23:59:59'
where DEPT_CODE = 'A100';
update DEPARTMENT set 
    END_DATE = '2023-03-31',
    VALID_FLG = '0',
    UPDATE_USER_NAME = 'ORG_CHG',
    USER_UPDATE_DATETIME = '2023-03-31 23:59:59'
where DEPT_CODE = 'A200';
update EMP set
    DEPT_CODE ='B300',
    START_DATE = '2023-04-01',
    UPDATE_USER_NAME = 'ORG_CHG',
    USER_UPDATE_DATETIME = '2023-04-01 00:00:00'
where DEPT_CODE = 'A100' and VALID_FLG = '1';
update EMP set
    DEPT_CODE ='B300',
    START_DATE = '2023-04-01',
    UPDATE_USER_NAME = 'ORG_CHG',
    USER_UPDATE_DATETIME = '2023-04-01 00:00:00'
where DEPT_CODE = 'A200' and VALID_FLG = '1';

select * from DEPARTMENT;
select * from EMP;