INSERT INTO DEPARTMENT
(
DEPT_CODE
,START_DATE
,END_DATE
,DEPT_NAME
,LAYER
,UP_DEPT_CODE
,VALID_FLG
,UPDATE_USER_NAME
,USER_UPDATE_DATETIME
)
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'
;