On Wed, Feb 02, 2005 at 12:27:53AM +0000, Tomás Zandoná wrote:

Hey Tomás,

Is the column of type timestamp or something similar? If so, probably
you are being bitten by a timezone problem. If you want just a date,
declare the column with type date.

--
Alvaro Herrera (<alvherre[@]dcc.uchile.cl>)
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stamp method," namely by saving envelopes addressed to him as 'Dr. Floyd'.
After collecting 500 such letters, he mused, a university somewhere in
Arizona would probably grant him a degree. (Don Knuth)

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There is only one row in the table?


select * from test_table; or
select day from test_table;

What does your insert statement look like? What is the
column type?

Ted

--- Tomás Zandoná <tdzandona (AT) yahoo (DOT) com.br> wrote:



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"Tomás Zandoná" <tdzandona (AT) yahoo (DOT) com.br> writes:
What timezone are you using, and is midnight 2005-10-09 a
daylight-savings transition time there? If so, this is a known bug
in PG 7.3 --- update to 7.4 or later to fix it. As a workaround you
could explicitly cast the date value to timestamp without time zone
before feeding it to to_char.

My Fedora machine thinks that the October 2005 transition day in Brazil
is the 16th, but you might be using a different timezone database. 7.3
gets the promotion from date to timestamp-with-zone wrong:

regression=# set TimeZone TO 'America/Sao_Paulo';
SET
regression=# select ('2005-10-16'::date)::timestamp with time zone;
timestamptz
------------------------
2005-10-15 23:00:00-03
(1 row)

7.4 and later produce '2005-10-16 01:00:00-02' which is more reasonable
(the point being that local midnight doesn't actually exist due to the
DST spring forward).

regards, tom lane

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