Обсуждение: timestamp with postgresql 7.3

Hi,

I have a table a field with timestamps in seconds since epoch and I would
like to get a human readable date... but it seems that postgresql 7.3 does
not support the datetime(), timestamp(), timestamptz() functions...

I tried the example in:
http://archives.postgresql.org/pgsql-bugs/2002-07/msg00117.php

and get:

DB=# select val, datetime(val), "timestamp"(val), timestamptz(val) from test_table;
ERROR:  Function datetime(integer) does not exist       Unable to identify a function that satisfies the given argument
types      You may need to add explicit typecasts
 

And tried various typecasts without any success.

Any help?

---
Claude

On 4 Apr 2003 at 22:18, Claude wrote:

> 
> Hi,
> 
> I have a table a field with timestamps in seconds since epoch and I
> would like to get a human readable date... but it seems that
> postgresql 7.3 does not support the datetime(), timestamp(),
> timestamptz() functions...
> 
> I tried the example in:
> http://archives.postgresql.org/pgsql-bugs/2002-07/msg00117.php
> 
> and get:
> 
> DB=# select val, datetime(val), "timestamp"(val), timestamptz(val)
> from test_table; ERROR:  Function datetime(integer) does not exist
>         Unable to identify a function that satisfies the given
>         argument types You may need to add explicit typecasts
> 
> And tried various typecasts without any success.
> 
> Any help?

I think you need to read the 7.3 documentation and release notes.
-- 
Dan Langille : http://www.langille.org/

On Fri, 4 Apr 2003, Claude wrote:

> I have a table a field with timestamps in seconds since epoch and I would
> like to get a human readable date... but it seems that postgresql 7.3 does
> not support the datetime(), timestamp(), timestamptz() functions...

I'd say probably something like:

CAST('epoch' as timestamp with time zone) + integerfield * INTERVAL '1 second'

Thanks, that made the trick.


On Fri, 4 Apr 2003, Stephan Szabo wrote:

>
> On Fri, 4 Apr 2003, Claude wrote:
>
> > I have a table a field with timestamps in seconds since epoch and I would
> > like to get a human readable date... but it seems that postgresql 7.3 does
> > not support the datetime(), timestamp(), timestamptz() functions...
>
> I'd say probably something like:
>
> CAST('epoch' as timestamp with time zone) + integerfield * INTERVAL '1 second'