UPDATE 
    DEPARTMENT
SET 
    DEPT_CODE='B300',
    START_DATE='2023-04-01',
    END_DATE=NULL,
    DEPT_NAME='新設部門',
    VALID_FLG='1',
    USER_UPDATE_DATETIME = '2023-04-01 00:00:00'
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
    VALID_FLG = '1'
    AND DEPT_CODE='A100';