在调用用户定义的 function 时将不同的日期作为参数传递，并在 oracle 中使用循环

Question

let say I have a user defined function which take date as parameter ie to_date,from_date but it has a limitation that it can provide data of maximum limit of three months but I need data of one year how I am suppose to do that.. function

select *
from table(height_DOL.DOL_PKG_DATA.FN_GET_height_DATA(IN_FROM_EFFECTIVE_DATE => '11-JAN-20',IN_TO_EFFECTIVE_DATE => '11-APR-20')); 

with the help of loop in oracle

Answer 1

You can use UNION if you can not change the function:

select *
  from table(height_DOL.DOL_PKG_DATA.FN_GET_height_DATA(IN_FROM_EFFECTIVE_DATE => '11-JAN-20',IN_TO_EFFECTIVE_DATE => '11-APR-20'))
UNION ALL
select *
from table(height_DOL.DOL_PKG_DATA.FN_GET_height_DATA(IN_FROM_EFFECTIVE_DATE => '11-APR-20',IN_TO_EFFECTIVE_DATE => '11-JUN-20'))
UNION ALL
...
...

Answer 2

This is an approach what can be used to filter down 1 year data-

SELECT *
From T
WHERE date_column > DATEADD(year,-1,GETDATE())

Or This

select *
from
height_DOL.DOL_PKG_DATA.FN_GET_height_DATA
where IN_FROM_EFFECTIVE_DATE => '11-JAN-20' and IN_TO_EFFECTIVE_DATE <= '11-APR-20';