INSERT INTO DEPARTMENT
SELECT
  'B300'
 ,'2023-04-01'
 ,NULL
 ,'新設部門'
 ,A.LAYER
 ,A.UP_DEPT_CODE
 ,'1'
 ,A.UPDATE_USER_NAME
 ,'2023-04-01 00:00:00'
FROM DEPARTMENT A
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');

--SELECT * FROM DEPARTMENT WHERE DEPT_CODE IN ('B300','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';

--SELECT * FROM EMP;