Question

I have a date. I want to check whether the date lies between JAN to JUNE or JULY to DECEMBER. Like suppose if user enter input date 28-NOV-12 then how can i check that this date lies between JULY to DECEMBER ? and if user input date 28-FEB-12 then this date lies between JAN to JUNE? Basically i want to check dates on half yearly basis ?

Thanks

Answer 1

Try to_char function, e.g. this way:

select
    case
        when to_char(date_column, 'mm') <= 6 then '1st' 
        when to_char(date_column, 'mm') >= 7 then '2nd'
    end as half_of_the_year
from your_table

to_char(date_column, 'mm') returns month (01..12, 01 – January) part of the date.

select
    case
        when to_char(sysdate, 'mm') <= 6 then '1st' 
        when to_char(sysdate, 'mm') >= 7 then '2nd'
    end as half_of_the_year
from dual

today returns:

HALF_OF_THE_YEAR
2nd