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
    VALID_FLG = '1'
    and DEPT_CODE in ('A100','A200');