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';
    
-- SELECT
--     DEPT_CODE,
--     START_DATE,
--     END_DATE,
--     DEPT_NAME,
--     LAYER,
--     UP_DEPT_CODE,
--     VALID_FLG,
--     UPDATE_USER_NAME,
--     USER_UPDATE_DATETIME
-- FROM
--     DEPARTMENT