alter table hrsa_salary_sob_item add income_category varchar2(100)
/

alter table hrsa_salary_sob_item modify income_category default '1'
/

update hrsa_salary_sob_item set income_category = '1' where salary_sob_id IN
(select id from hrsa_salary_sob where hrsa_salary_sob.income_category = '1')
/

update hrsa_salary_sob_item set income_category = '2' where salary_sob_id IN
(select id from hrsa_salary_sob where hrsa_salary_sob.income_category = '2')
/

update hrsa_salary_sob_item set income_category = '4' where salary_sob_id IN
(select id from hrsa_salary_sob where hrsa_salary_sob.income_category = '4')
/

alter table hrsa_salary_sob_item add salary_item_code varchar2(100)
/

update hrsa_salary_sob_item a
set ( salary_item_code) = (
    select  code as salary_item_code
    from hrsa_salary_item b
    where a.salary_item_id = b.id
)
/