How to get the first day of the week on the calendar?

Hello

I'm storing calendar weeks in my database. for example 30/2013.

How can I get the first day of this week (Monday)? in this case, it is 22.07.2013

THX

Anja

with your_table as)
Select 30-2013' double your_column
)

Select
trunc)
TO_DATE ("0101"
|| (substr (your_column,-4), 'MMDDYYYY'), 'IW')
+ to_number (substr (your_column, 1, 2)) * 7-7
start_of_week
from your_table

START_OF_WEEK
22/07/2013

Post edited by: chris227
Corrected example

Tags: Database

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