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 = '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
    (DEPT_CODE = 'A100' OR DEPT_CODE = 'A200') AND VALID_FLG = '1';
    
    
SELECT * FROM DEPARTMENT;