Display data DateTime Fields in the local time zone

I have a table defined as follows:

create table TimeTest
(
DATETIME TIMESTAMP (0) WITH TIME ZONE
)

I insert two lines where the time zone changes to a date given in the spring:
insert into timetest values (datetime) (to_timestamp_tz (' 08/Mar/2009:01:59:55-0500 ',' DD/my/YYYY:HH24:MI:SS TZHTZM ""));
insert into timetest values (datetime) (to_timestamp_tz (' 08/Mar/2009:03:00:00-0400 ',' DD/my/YYYY:HH24:MI:SS TZHTZM ""));

How can I select the datetime field in the time zone of my choice? If my session time zone is - 0400, should not 01:59:55-0500 displayed as time 02:59:55?

The session time zone is:
Select double sessiontimezone;
-04:00

So why do I get this:
Select to_char (datetime, ' DD/my/YYYY:HH24:MI:SS TZHTZM "") of timetest;
08/Mar / 2009:01:59:55-0500
08/Mar / 2009:03:00:00-0400

I thought I would get this result instead:
08/Mar / 2009:02:59:55-0400
08/Mar / 2009:03:00:00-0400

Thank you
Troy

Published by: cforasun on April 8, 2010 17:36

It is stored as a timestamp with time zone, so you must cast in the local time zone for your database:

Connected to Oracle Database 10g Enterprise Edition Release 10.2.0.4.0
Connected as fsitja

SQL>
SQL> create table TimeTest (DATETIME TIMESTAMP(0) WITH TIME ZONE);

Table created
SQL> insert into timetest(datetime) values (to_timestamp_tz('08/Mar/2009:01:59:55 -0500', 'DD/Mon/YYYY:HH24:MI:SS TZHTZM'));

1 row inserted
SQL> insert into timetest(datetime) values (to_timestamp_tz('08/Mar/2009:03:00:00 -0400', 'DD/Mon/YYYY:HH24:MI:SS TZHTZM'));

1 row inserted
SQL> commit;

Commit complete
SQL> select datetime, cast(datetime as timestamp(0) with local time zone) from timetest;

DATETIME                                          CAST(DATETIMEASTIMESTAMP(0)WIT
------------------------------------------------- --------------------------------
08/03/09 01:59:55 -05:00                          08/03/09 03:59:55
08/03/09 03:00:00 -04:00                          08/03/09 04:00:00

SQL> 

Tags: Database

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