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';