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
    VALID_FLG = '1'
AND DEPT_CODE IN ('A100','A200')
AND START_DATE < '2023-04-01 00:00:00'
;