insert into
    DEPARTMENT
select
    'B300' as DEPT_CODE 
    , '2023-04-01' as START_DATE
    , NULL as END_DATE
    , '新設部門' as DEPT_NAME 
    , LAYER
    , UP_DEPT_CODE
    , '1' as VALID_FLG
    , UPDATE_USER_NAME
    , '2023-04-01 00:00:00' as USER_UPDATE_DATETIME 
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
    VALID_FLG = '1'
    and DEPT_CODE in ('A100', 'A200')
;