How can i get date from specific week number in SQL/PLSQL?

Question

I tried multiple options but i want to know if there is a simpler way to get the dates from a week number.

Ex: Week 18

Start date from current week TO_CHAR(TRUNC(CURRENT_DATE, 'IW'),'DD.MM.YYYY')

End date from current ween TO_CHAR(NEXT_DAY(TRUNC(CURRENT_DATE,'IW'),'SUNDAY'),'DD.MM.YYYY')

This will return 30.04.2018 and 06.05.2018

But is there a simpler way to get start and end for week 19 for example ?

Thanks in advance!

Answer 1

It is unclear to me why you need to convert from a date to a string. I would simply use:

TRUNC(CURRENT_DATE, 'IW') as date_start
TRUNC(CURRENT_DATE, 'IW') + 6 as date_end

You can, of course, use TO_CHAR() to get any output format you want.