On 05/20/15 20:22, David G. Johnston wrote: > On Monday, May 18, 2015, er.tejaspatel88@xxxxxxxxx < > er.tejaspatel88@xxxxxxxxx> wrote: > >> If I have to find upcoming birthdays in current week and the current week >> fall into different months - how would you handle that? >> > > Extract(week from timestamptz_column) > > ISO weeks are not affected by month boundaries but do start on Monday. There is the year start/end boundary conditions to worry about there. If the current week covers Dec28-Jan02 then week of year won't help for a birthday on Jan01 or Jan02 if 'today' is in the Dec portion. Ditto for birthday in Dec portion when 'today' is in the Jan portion. There is probably a better way to do it than what I'm showing here, but here's an example: with x as ( select now() - (extract(dow from now()) || ' days')::interval as weekstart ) select to_char(x.weekstart, 'YYYY-MM-DD') as first_day, to_char(x.weekstart + '6 days', 'YYYY-MM-DD') as last_day from x; You could probably make some of that into a function that accepts a timestamptz and generates the two days. Or even does the compare too. HTH. Bosco. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance