insert into
    DEPARTMENT
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';