Re: Restricting a VIEW.

Hi Ludwig,

I need that like a VIEW because if I convert that view to a select, I
must to do that SELECT in a lot of client programs.

I would to know if I can to do any kind of VIEW with parameters...
Rewriting the view in the example:

DROP VIEW vw_ty_test;
CREATE VIEW vw_ty_test AS
SELECT
TO_CHAR(datein,'MM/YYYY') AS datein2,
SUM(money)
FROM
ty_test
WHERE
datein BETWEEN $Parameter1 AND $Parameter2
GROUP BY
datein2;

is it possible ?? How ?

Thanks a lot...

On Mon, 21 Oct 2002 02:51:10 +0000 (UTC), lud_nowhere_man(at)yahoo(dot)com
(Ludwig Lim) wrote:

>
>--- Terry Yapt <yapt(at)technovell(dot)com> wrote:
>> Hello all,
>>
>> I have a doubt. In the next example, I have a table
>> with two columns:
>> - DATE
>> - MONEY
>>
>> And a VIEW which SUM's the money GROUPing by
>> 'month/year' (I cut off the day)...
>>
>> Ok.. I would like to be able to SELECT * FROM VIEW..
>> but restricting by complete dates (dd/mm/yyyy)...
>> (Last select in the example)
>>
>> I think it isn't possible, but I would like to know
>> your opinion... Or if there is any workaround...
>>
>> Best regards..
>>
>> --==============================
>> DROP TABLE ty_test;
>> CREATE TABLE ty_test
>> (datein date NOT NULL,
>> money numeric(6,2) NOT NULL,
>> PRIMARY KEY (datein)
>> ) WITHOUT OIDS;
>>
>> INSERT INTO ty_test VALUES ('2002/10/01',10);
>> INSERT INTO ty_test VALUES ('2002/10/15',20);
>> INSERT INTO ty_test VALUES ('2002/11/15',30);
>>
>> DROP VIEW vw_ty_test;
>> CREATE VIEW vw_ty_test AS
>> SELECT
>> TO_CHAR(datein,'MM/YYYY') AS datein2,
>> SUM(money)
>> FROM
>> ty_test
>> GROUP BY
>> datein2;
>>
>> SELECT * FROM ty_test; -- All rows from table.
>> SELECT * FROM vw_ty_test; -- All rows from view.
>>
> I don't the work around using a view but you can do
>it without using a view:
>
> SELECT
> to_number(to_char(datein,'mm'),'99') as month,
> to_number(to_char(datein,'yyyy'),'9999') as year,
> SUM(money)
> FROM ty_test
> WHERE datein BETWEEN
> to_date('01/10/2002','mm/dd/yyyy') AND
> to_date('09/10/2002','mm/ddy/yyyy')
> ORDER BY
> to_number(to_char(datein,'mm'),'99')
> to_number(to_char(datein,'yyyy'),'9999');
>
>
>ludwig.
>
>__________________________________________________
>Do you Yahoo!?
>New DSL Internet Access from SBC & Yahoo!
>http://sbc.yahoo.com
>
>---------------------------(end of broadcast)---------------------------
>TIP 3: if posting/reading through Usenet, please send an appropriate
>subscribe-nomail command to majordomo(at)postgresql(dot)org so that your
>message can get through to the mailing list cleanly