INSERT INTO DEPARTMENT 
    (DEPT_CODE , START_DATE, DEPT_NAME, LAYER, UP_DEPT_CODE, VALID_FLG, UPDATE_USER_NAME, USER_UPDATE_DATETIME)
    SELECT
        'B300' AS DEPT_CODE
        ,'2023-04-01' AS START_DATE
        ,'新設部門' AS DEPT_NAME
        ,LAYER
        ,UP_DEPT_CODE
        ,'1' AS VALID_FLG
        ,UPDATE_USER_NAME
        ,'2023-04-01 00:00:00' AS USER_UPDATE_DATETIME
    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';