Hi all,
I've come across a puzzling situation with a table having a timestamp
with time zone column. This column is full of values displaying
exactly as '1999-12-31 19:00:00-05', but for some reason Postgres is
treating some of these identical-seeming timestamps as being
different.
If I update
Josh Kupershmidt schmi...@gmail.com writes:
I've come across a puzzling situation with a table having a timestamp
with time zone column. This column is full of values displaying
exactly as '1999-12-31 19:00:00-05', but for some reason Postgres is
treating some of these identical-seeming
On Fri, Sep 3, 2010 at 2:58 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Is this installation using float or integer timestamps? If the former,
it might be interesting to look at the subtraction result
ts - '1999-12-31 19:00:00-05'::timestamptz
I'm thinking some of them might be different by
Josh Kupershmidt schmi...@gmail.com writes:
On Fri, Sep 3, 2010 at 2:58 PM, Tom Lane t...@sss.pgh.pa.us wrote:
I'm thinking some of them might be different by submicrosecond amounts.
Ah yes, this is likely why. pg_config says CONFIGURE = ...
'--disable-integer-datetimes' ...
But I'm having
On Fri, Sep 3, 2010 at 3:24 PM, Tom Lane t...@sss.pgh.pa.us wrote:
regression=# select extract(epoch from ts - '1999-12-31
19:00:00-05'::timestamptz) from t1;
date_part
--
1.0761449337e-07
0
(2 rows)
This timestamp (2000-01-01 00:00 GMT)
[ trivia warning ]
I wrote:
We don't make any great effort to expose that though. It looks like
the closest value that timestamptzin makes different from zero is
regression=# select extract(epoch from '1999-12-31 19:00:00.001-05' -
'1999-12-31 19:00:00-05'::timestamptz) ;
Josh Kupershmidt schmi...@gmail.com writes:
EXTRACT(epoch ...) was what I was looking for:
SELECT EXTRACT(epoch FROM ts - '1999-12-31 19:00:00-05'::timestamptz)
FROM timestamps_test LIMIT 5;
date_part
---
1.4120666068199e-309
1.4154982781624e-309
On Fri, Sep 3, 2010 at 3:40 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Wow. You must have gotten those with the help of some arithmetic,
because timestamptzin would never have produced them. I found out I can
do
regression=# select extract(epoch from ('2000-01-01 00:00:00'::timestamptz +
Josh Kupershmidt schmi...@gmail.com writes:
On Fri, Sep 3, 2010 at 3:40 PM, Tom Lane t...@sss.pgh.pa.us wrote:
but I wonder what it was you actually did.
I wonder myself :-) I encountered these timestamps while going through
some C code I inherited which uses libpq to load several tables
On Fri, Sep 3, 2010 at 4:01 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Interesting. I can't imagine how you could have produced these with
plain COPY, since that would go through timestamptzin. Was it by any
chance a binary COPY? If so I could believe that funny timestamps could
get in. Maybe
Josh Kupershmidt schmi...@gmail.com writes:
On Fri, Sep 3, 2010 at 4:01 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Interesting. I can't imagine how you could have produced these with
plain COPY, since that would go through timestamptzin. Was it by any
chance a binary COPY? If so I could believe
11 matches
Mail list logo
