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';