INSERT INTO DEPARTMENT
    SELECT
        'B300',
        '2023-04-01',
        NULL,
        '新設部門',
        DP.LAYER,
        DP.UP_DEPT_CODE,
        '1',
        DP.UPDATE_USER_NAME,
        '2023-04-01 00:00:00'
    FROM DEPARTMENT AS DP
    WHERE
        DP.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 ='A100'
    OR DEPT_CODE = '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 = 'A100' OR DEPT_CODE = 'A200');