insert into DEPARTMENT
select
 'B300'
,'2023-04-01'
,NULL
,'新設部門'
,LAYER
,UP_DEPT_CODE
,'1'
,UPDATE_USER_NAME
,'2023-04-01 00:00:00'
from
DEPARTMENT
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 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';