How to get week start and end date string in PostgreSQL?

Question

I am using PostgreSQL 8.3. I have a table like this:

id        regist_time        result
-----------------------------------
1     2012-07-0         


        

Answer 1

This can help, a query to get all days of current week.

select cast(date_trunc('week', current_date) as date) + i
from generate_series(0,6) i

2015-08-17
2015-08-18
2015-08-19
2015-08-20
2015-08-21

To get week start and end date (as 0 for Monday and 4 for Friday):

select cast(date_trunc('week', current_date) as date) + 0 || '-->' ||  cast(date_trunc('week', current_date) as date) + 4;

2015-08-17-->2015-08-21