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* date format in 7.4
@ 2004-02-20 14:58 Silke Trissl <trissl@informatik.hu-berlin.de>
0 siblings, 3 replies; 4+ messages in thread
From: Silke Trissl @ 2004-02-20 14:58 UTC (permalink / raw)
To: pgsql-sql
Hi,
I have an application where users can enter the date via a web interface.
Recently I upgrated my PostgreSQL version from 7.3 to 7.4.1.
On 7.3 I run several tests about the format of the date and found,
that Postgres accepts almost everything. Today I found out, that 7.4.1
only accepts dates in the format mm-dd-yy, although the documentation
still states the following
#
5.
Otherwise the date field ordering is assumed to follow the
DateStyle setting: mm-dd-yy, dd-mm-yy, or yy-mm-dd. Throw an error if a
month or day field is found to be out of range.
#
ref: http://www.postgresql.org/docs/7.4/interactive/datetime-appendix.html
Does anyone know, if it is intentional to restrict it to mm-dd-yy format
or is is just a bug of 7.4.1?
Thanks in advance for any suggestions
Silke
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: date format in 7.4
@ 2004-02-20 15:27 scott.marlowe <scott.marlowe@ihs.com>
parent: Silke Trissl <trissl@informatik.hu-berlin.de>
2 siblings, 0 replies; 4+ messages in thread
From: scott.marlowe @ 2004-02-20 15:27 UTC (permalink / raw)
To: Silke Trissl <trissl@informatik.hu-berlin.de>; +Cc: pgsql-sql
On Fri, 20 Feb 2004, Silke Trissl wrote:
> Hi,
>
> I have an application where users can enter the date via a web interface.
>
> Recently I upgrated my PostgreSQL version from 7.3 to 7.4.1.
>
> On 7.3 I run several tests about the format of the date and found,
> that Postgres accepts almost everything. Today I found out, that 7.4.1
> only accepts dates in the format mm-dd-yy, although the documentation
> still states the following
> #
>
> 5.
>
> Otherwise the date field ordering is assumed to follow the
> DateStyle setting: mm-dd-yy, dd-mm-yy, or yy-mm-dd. Throw an error if a
> month or day field is found to be out of range.
>
> #
> ref: http://www.postgresql.org/docs/7.4/interactive/datetime-appendix.html
>
> Does anyone know, if it is intentional to restrict it to mm-dd-yy format
> or is is just a bug of 7.4.1?
It is intentional. But, it's not as restricted as you might think.
You can set the style to one of several ways you can set it.
http://www.postgresql.org/docs/7.4/static/datatype-datetime.html
the idea behind fixing this in 7.4 was that if you set a date style of
SQL, DMY then it would be wring for the database to access a date of
3/14/04 and convert it to March 14th, since your date style said that
march 14th should come in as 14/03/04.
I.e. it's better at checking ranges and throwing out the ones that don't
fit. Better to have a problem getting the wrong data into the database
than trying to get it back out a couple years down the road.
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: date format in 7.4
@ 2004-02-20 15:32 Tom Lane <tgl@sss.pgh.pa.us>
parent: Silke Trissl <trissl@informatik.hu-berlin.de>
2 siblings, 0 replies; 4+ messages in thread
From: Tom Lane @ 2004-02-20 15:32 UTC (permalink / raw)
To: Silke Trissl <trissl@informatik.hu-berlin.de>; +Cc: pgsql-sql
Silke Trissl <trissl@informatik.hu-berlin.de> writes:
> On 7.3 I run several tests about the format of the date and found,
> that Postgres accepts almost everything. Today I found out, that 7.4.1
> only accepts dates in the format mm-dd-yy,
It now requires the field order to be what DateStyle says it is. See
the very voluminous flamewar about ambiguous date input handling in the
pgsql-hackers archives from last summer.
> although the documentation still states the following
AFAICS the documentation says so too...
regards, tom lane
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: date format in 7.4
@ 2004-02-20 15:57 Richard Huxton <dev@archonet.com>
parent: Silke Trissl <trissl@informatik.hu-berlin.de>
2 siblings, 0 replies; 4+ messages in thread
From: Richard Huxton @ 2004-02-20 15:57 UTC (permalink / raw)
To: Silke Trissl <trissl@informatik.hu-berlin.de>; pgsql-sql
On Friday 20 February 2004 14:58, Silke Trissl wrote:
> Hi,
>
> I have an application where users can enter the date via a web interface.
>
> Recently I upgrated my PostgreSQL version from 7.3 to 7.4.1.
>
> On 7.3 I run several tests about the format of the date and found,
> that Postgres accepts almost everything. Today I found out, that 7.4.1
> only accepts dates in the format mm-dd-yy, although the documentation
> still states the following
> 5.
> Otherwise the date field ordering is assumed to follow the
> DateStyle setting: mm-dd-yy, dd-mm-yy, or yy-mm-dd. Throw an error if a
> month or day field is found to be out of range.
I think what happened is that it will now *only* accept the format specified
by your datestyle setting. Previously, as you say, it would have a guess at
almost anything (and sometimes get it wrong).
--
Richard Huxton
Archonet Ltd
^ permalink raw reply [nested|flat] 4+ messages in thread
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-- links below jump to the message on this page --
2004-02-20 14:58 date format in 7.4 Silke Trissl <trissl@informatik.hu-berlin.de>
2004-02-20 15:27 ` scott.marlowe <scott.marlowe@ihs.com>
2004-02-20 15:32 ` Tom Lane <tgl@sss.pgh.pa.us>
2004-02-20 15:57 ` Richard Huxton <dev@archonet.com>
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