Обсуждение: distinct date problem

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distinct date problem

От
lotus118@excite.com (Lotus118)
Дата:
Hi,
I'm having difficulty figuring this one out:
I have a table with record entries which all have a date attribute, looking 
something like '2000-11-11'.  What I want from my data base is a list of 
all the years that are present in this attribute in the relation.  So for 
example, if I had a couple of records like:
2000-11-05
1988-02-09
1999-10-06
2001-08-08
1999-09-27
2001-04-04
I would want the query to return:
2000-11-05
1988-02-09
1999-10-06
2001-08-08
So that I get only the distict years.
How does one go about this?
Thanks,
Lotus


Re: distinct date problem

От
Michael Fork
Дата:
This should work:

SELECT distinct(date_part('year', <date field>)) FROM <<date table>>;

Michael Fork - CCNA - MCP - A+
Network Support - Toledo Internet Access - Toledo Ohio

On Sun, 25 Feb 2001, Lotus118 wrote:

> Hi,
> I'm having difficulty figuring this one out:
> I have a table with record entries which all have a date attribute, looking 
> something like '2000-11-11'.  What I want from my data base is a list of 
> all the years that are present in this attribute in the relation.  So for 
> example, if I had a couple of records like:
> 2000-11-05
> 1988-02-09
> 1999-10-06
> 2001-08-08
> 1999-09-27
> 2001-04-04
> I would want the query to return:
> 2000-11-05
> 1988-02-09
> 1999-10-06
> 2001-08-08
> So that I get only the distict years.
> How does one go about this?
> Thanks,
> Lotus
>