insert into department values
(
    'B300'
    , '2023-04-01'
    , NULL
    , '新設部門'
    , 2
    , '1000'
    , '1'
    , 'SYSTEM'
    , '2023-04-01 00:00:00'
)
;

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'
    or dept_code = 'A200')
;