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

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';