Re: [GENERAL] Date conversion using day of week

2011-03-30 Thread Adrian Klaver
On 03/30/2011 09:15 AM, Steve Crawford wrote: On 03/29/2011 04:24 PM, Adrian Klaver wrote: ... Well the strange part is only fails for SUN:... test(5432)aklaver=>select to_date('2011-13-SUN', 'IYYY-IW-DY'); to_date 2011-03-28 ... You specified Sunday as the day but the date return

Re: [GENERAL] Date conversion using day of week

2011-03-30 Thread Steve Crawford
On 03/29/2011 04:24 PM, Adrian Klaver wrote: ... Well the strange part is only fails for SUN:... test(5432)aklaver=>select to_date('2011-13-SUN', 'IYYY-IW-DY'); to_date 2011-03-28 ... You specified Sunday as the day but the date returned is a Monday. I would categorize that as

Re: [GENERAL] Date conversion using day of week

2011-03-29 Thread Adrian Klaver
On Tuesday, March 29, 2011 9:02:52 am Steve Crawford wrote: > > But you changed it to specify an ISO year avoiding the mixed > conventions. According to the 9.0 docs > (http://www.postgresql.org/docs/9.0/static/functions-formatting.html): > > "An ISO week date (as distinct from a Gregorian dat

Re: [GENERAL] Date conversion using day of week

2011-03-29 Thread Steve Crawford
On 03/29/2011 08:50 AM, Adrian Klaver wrote: On Tuesday, March 29, 2011 8:33:59 am Steve Crawford wrote: On 03/29/2011 08:07 AM, Marc Munro wrote: I'm trying to validate a day of the week, and thought that to_date would do the job for me. But I found a case where it cannot tell the difference

Re: [GENERAL] Date conversion using day of week

2011-03-29 Thread Adrian Klaver
On Tuesday, March 29, 2011 8:33:59 am Steve Crawford wrote: > On 03/29/2011 08:07 AM, Marc Munro wrote: > > I'm trying to validate a day of the week, and thought that to_date would > > do the job for me. But I found a case where it cannot tell the > > difference between sunday and monday. Is this

Re: [GENERAL] Date conversion using day of week

2011-03-29 Thread Steve Crawford
On 03/29/2011 08:07 AM, Marc Munro wrote: I'm trying to validate a day of the week, and thought that to_date would do the job for me. But I found a case where it cannot tell the difference between sunday and monday. Is this a bug or intended behaviour? dev=# select to_date('2011-13-Mon', '

Re: [GENERAL] Date conversion using day of week

2011-03-29 Thread Adrian Klaver
On Tuesday, March 29, 2011 8:07:48 am Marc Munro wrote: > I'm trying to validate a day of the week, and thought that to_date would > do the job for me. But I found a case where it cannot tell the > difference between sunday and monday. Is this a bug or intended > behaviour? > > dev=# select to_d