Обсуждение: Set DATESTYLE='ISO' (Postgres 6.3.2)

Hi,

I am using Postgresql 6.3.2 and would like to set the datestyle to be ISO.

Here is what I did:

- issued "set datestyle='ISO' " using PQexec() after opening a connection
with the database. (no errors)
- Then checked the datestyle from psql
dbxxx=> show datestyle ;
response:
NOTICE: DateStyle is Postgres with US (NonEuropean) conventions.
- Also, when I open a jdbc connection with debug tracing on I notice that
 the datestyle is Postgres

Why so?? Is this a bug or am I missing something?

Instead of issuing 'set datestyle' command if I set the environment
variable
'PGDATESTYLE' to ISO it works fine but I would like to avoid having to do
this.
What do I need to do to get the sql command 'set datestyle' to work??
I appreciate any help.

Thank You,
SR

On Mon, 24 Aug 1998, Sangeeta Rao wrote:

>
> Hi,
>
> I am using Postgresql 6.3.2 and would like to set the datestyle to be ISO.
>
> Here is what I did:
>
> - issued "set datestyle='ISO' " using PQexec() after opening a connection
> with the database. (no errors)
> - Then checked the datestyle from psql
> dbxxx=> show datestyle ;
> response:
> NOTICE: DateStyle is Postgres with US (NonEuropean) conventions.
> - Also, when I open a jdbc connection with debug tracing on I notice that
>  the datestyle is Postgres
>
> Why so?? Is this a bug or am I missing something?
>
> Instead of issuing 'set datestyle' command if I set the environment
> variable
> 'PGDATESTYLE' to ISO it works fine but I would like to avoid having to do
> this.

Setting datestyle variable has effect only for the session it was issued
in. It was made so to avoid interfernce with another sessions since
they could be started not only by you, but someone else (remember --
PostgreSQL is multiusear). So, the solution is to run postmaster with
"-e" turned on to get the datestyle you need by default-- for details
check manpages postmaster(1) and postgres(1).

Aleksey.

Hello Aleksey,

mercoledì, 26 agosto 98, you wrote:


AD> On Mon, 24 Aug 1998, Sangeeta Rao wrote:

>>
>> Hi,
>>
>> I am using Postgresql 6.3.2 and would like to set the datestyle to be ISO.
>>
>> Here is what I did:
>>
>> - issued "set datestyle='ISO' " using PQexec() after opening a connection
>> with the database. (no errors)
>> - Then checked the datestyle from psql
>> dbxxx=> show datestyle ;
>> response:
>> NOTICE: DateStyle is Postgres with US (NonEuropean) conventions.
>> - Also, when I open a jdbc connection with debug tracing on I notice that
>>  the datestyle is Postgres
>>
>> Why so?? Is this a bug or am I missing something?
>>
>> Instead of issuing 'set datestyle' command if I set the environment
>> variable
>> 'PGDATESTYLE' to ISO it works fine but I would like to avoid having to do
>> this.

AD> Setting datestyle variable has effect only for the session it was issued
AD> in. It was made so to avoid interfernce with another sessions since
AD> they could be started not only by you, but someone else (remember --
AD> PostgreSQL is multiusear). So, the solution is to run postmaster with
AD> "-e" turned on to get the datestyle you need by default-- for details
AD> check manpages postmaster(1) and postgres(1).
AD> Aleksey.


The -e option don't allows ISO format, it's a flag to set
European/NoEuropean.

from man postgres(1):

     -e   The -e option controls how dates  are  input  to  and
            output from the database.

            If  the  -e option is supplied, then all dates passed
            to and from the frontend processes will be assumed to
            be in European format ie.  DD-MM-YYYY otherwise dates
            are input and output in American format  ie.   MM-DD-
            YYYY


To setting date format you can use one of the following:

1. Setting PGDATESTYLE environment variable.

 2. Running postmaster using -oe parameter to set format
    date to 'European' convention.

 3. Changing the following variables:
         bool EuroDates = false / true
         int  DateStyle = USE_ISO_DATES
         on ~/src/backend/utils/init/globals.c file before PostgreSQL installation.


Best regards,
   Jose'                            mailto:sferac@bo.nettuno.it