insert 
into DEPARTMENT 
select
    'B300'
    , '2023-04-01'
    , NULL
    , '新設部門'
    , dp1.LAYER
    , dp1.UP_DEPT_CODE
    , '1'
    , dp1.UPDATE_USER_NAME
    , '2023-04-01 00:00:00' 
from
    DEPARTMENT as dp1 
where
    dp1.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';