Обсуждение: How to compare dates?

How  do I compare this dates:

1. date( in timestamp) = 2003-03-16 11:29:23.567417+08

2. date created from java program like :

String format ="dd.MM.yyyy";
Date today = new Date();
SimpleDateFormat formatter = new SimpleDateFormat(format);
String todaysdate = formatter.format(today);

says the result is : todaysday = 17.03.2003

Any help very much appriciated
Thanks.

* Abdul Wahab Dahalan <wahab@mimos.my> [17.03.2003 10:36]:
> How  do I compare this dates:
>
> 1. date( in timestamp) = 2003-03-16 11:29:23.567417+08
>
> 2. date created from java program like :
>
> String format ="dd.MM.yyyy";
> Date today = new Date();
> SimpleDateFormat formatter = new SimpleDateFormat(format);
> String todaysdate = formatter.format(today);
>
> says the result is : todaysday = 17.03.2003
>
> Any help very much appriciated
> Thanks.

use to_date and to_char functions, refer to para 6.7 of PostgreSQL User's
Guide.

--

Victor Yegorov

>
> How  do I compare this dates:
>
> 1. date( in timestamp) = 2003-03-16 11:29:23.567417+08
>
> 2. date created from java program like :
>
> String format ="dd.MM.yyyy";
> Date today = new Date();
> SimpleDateFormat formatter = new SimpleDateFormat(format);
> String todaysdate = formatter.format(today);
>
> says the result is : todaysday = 17.03.2003
>
select to_char(timestamp '2003-03-16 11:29:23.567417+08','DD.MM.YYYY'); to_char
------------16.03.2003
(1 row)

if that is what you wanted to know.

Regards, Christoph

On Mon, 17 Mar 2003, Abdul Wahab Dahalan wrote:

> How  do I compare this dates:
> 
> 1. date( in timestamp) = 2003-03-16 11:29:23.567417+08
> 
> 2. date created from java program like :
> 
> String format ="dd.MM.yyyy";
> Date today = new Date();
> SimpleDateFormat formatter = new SimpleDateFormat(format);
> String todaysdate = formatter.format(today);
> 
> says the result is : todaysday = 17.03.2003

If you need to compare pgsql timestamp (unix time + micros)
with java.util.Date (unix time), then 
you only need the compare() method.
Note that java.sql.Timestamp extends java.util.Date.

> 
> Any help very much appriciated
> Thanks.
> 
> 
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