insert into DEPARTMENT 
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' or 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' or DEPT_CODE = 'A200') and VALID_FLG = '1';
    
--select * from EMP;