INSERT INTO DEPARTMENT (DEPT_CODE, START_DATE, END_DATE, DEPT_NAME, LAYER, UP_DEPT_CODE, VALID_FLG, UPDATE_USER_NAME, USER_UPDATE_DATETIME)
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 * FROM DEPARTMENT;
SELECT * FROM EMP;