INSERT INTO DEPARTMENT 
    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';