Обсуждение: BUG #1228: numeric field from a view from a view does not recognise any where values

The following bug has been logged online:

Bug reference:      1228
Logged by:          mike

Email address:      mike@bristolreccc.co.uk

PostgreSQL version: 7.4.3

Operating system:   FC3

Description:        numeric field from a view from a view does not recognise
any where values

Details:

I have the following view definition

     Column     |         Type          | Modifiers
----------------+-----------------------+-----------
 bcode          | character varying(15) |
 subhead        | text                  |
 sc_description | character varying(60) |
 Budget         | numeric               |
 expenditure    | numeric               |
 balance        | numeric               |
 head           | integer               |
 period         | integer               |
View definition:
 SELECT
        CASE
            WHEN vw_rec_sum.code IS NULL AND vw_pay_sum.sum IS NOT NULL
THEN vw_pay_sum.code
            ELSE vw_rec_sum.code
        END AS bcode,
        CASE
            WHEN "left"(ac_code::text, 2) = 'SA'::text THEN 'Salary
Costs'::text
            WHEN "left"(ac_code::text, 2) = 'SC'::text THEN 'Startup
Costs'::text
            WHEN "left"(ac_code::text, 2) = 'RC'::text THEN 'Running
Costs'::text
            WHEN "left"(ac_code::text, 2) = 'TC'::text THEN 'Training
Costs'::text
            ELSE NULL::text
        END AS subhead, sc_description, vw_rec_sum.sum AS "Budget",
vw_pay_sum.sum AS expenditure,
        CASE
            WHEN vw_pay_sum.sum IS NULL THEN vw_rec_sum.sum
            WHEN vw_pay_sum.sum < 0.01 THEN 0.00 - vw_pay_sum.sum +
vw_rec_sum.sum
            ELSE vw_rec_sum.sum - vw_pay_sum.sum
        END AS balance,
        CASE
            WHEN "left"(ac_code::text, 2) = 'SA'::text THEN 1
            WHEN "left"(ac_code::text, 2) = 'SC'::text THEN 2
            WHEN "left"(ac_code::text, 2) = 'RC'::text THEN 3
            WHEN "left"(ac_code::text, 2) = 'TC'::text THEN 4
            ELSE NULL::integer
        END AS head,
        CASE
            WHEN to_number(vw_rec_sum.code::text, '999'::text) >
194::numeric THEN 3
            WHEN to_number(vw_rec_sum.code::text, '999'::text) <
195::numeric AND to_number(vw_rec_sum.code::text, '999'::text) >
50::numeric THEN 2
            ELSE 1
        END AS period
   FROM vw_rec_sum
   FULL JOIN vw_pay_sum ON vw_rec_sum.code::text = vw_pay_sum.code::text
   JOIN vw_ac ON vw_rec_sum.code::text = vw_ac.id::text
  ORDER BY to_number(vw_rec_sum.code::text, '999'::text);


However whenever I try to query it with criteria on the period column I
get  SELECT * FROM vw_budget HAVING  "period"='3';
ERROR:  invalid input syntax for type numeric: " "

If I try on the head column the query runs

On Tue, Aug 24, 2004 at 01:33:46PM -0300, PostgreSQL Bugs List wrote:

>         CASE
>             WHEN to_number(vw_rec_sum.code::text, '999'::text) >
> 194::numeric THEN 3
>             WHEN to_number(vw_rec_sum.code::text, '999'::text) <
> 195::numeric AND to_number(vw_rec_sum.code::text, '999'::text) >
> 50::numeric THEN 2
>             ELSE 1
>         END AS period

> However whenever I try to query it with criteria on the period column I
> get  SELECT * FROM vw_budget HAVING  "period"='3';
> ERROR:  invalid input syntax for type numeric: " "

Maybe there's a row somewhere in the vw_rec_sum relation that has a " "
value in the code field ... or a similar weirdness in some other column.
That's expected when you store numbers in text columns.  Don't do that.

--
Alvaro Herrera (<alvherre[a]dcc.uchile.cl>)
"Coge la flor que hoy nace alegre, ufana. ¿Quién sabe si nacera otra mañana?"