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 LAYER = (select LAYER  from DEPARTMENT where DEPT_CODE = 'A100')
,UP_DEPT_CODE  = (select UP_DEPT_CODE  from DEPARTMENT where DEPT_CODE = 'A100')
,UPDATE_USER_NAME  = (select UPDATE_USER_NAME  from DEPARTMENT where DEPT_CODE = 'A100')
where
DEPT_CODE = 'B300';

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 in ('A100','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 in ('A100','A200')
and VALID_FLG = '1';