Re: aggregate function ?

On 16/05/2007, at 15:01, Richard Broersma Jr wrote:

>
> --- Raimon Fernandez <coder(at)montx(dot)com> wrote:
>
>> but If I send the code that you send me, it takes too much .... well,
>> more than 20 minutes and still waiting ...
>
> just for testing try this version again so see if it preforms much
> better, then see if the summing
> results are correct according to what you need.
>
> SELECT A1.oid, A1.concepte, A1.deure, A1.haver,
> sum( COALESCE( A1.deure, 0 ) - COALESCE( A2.haver, 0 ))
> AS value_sum
> FROM Assentaments AS A1
> INNER JOIN Assentaments AS A2
> ON A1.oid <= A2.oid
> WHERE A1.numero=11189
> GROUP BY A1.oid, A1.concepte, A1.deure, A1.haver
> ORDER BY A1.oid;

ok, here are the results:

now I'm using PGadminIII ...

180108;"fra.reg.prop. L´HOSPITALET-4";381.19;0.00;-523787081.74
180109;"fra.reg.prop. L´HOSPITALET-4";121.54;0.00;-728296890.68
180110;"fra.reg.prop. L´HOSPITALET-4";146.82;0.00;-708385624.70
180111;"fra.reg.prop. L´HOSPITALET-4";0.00;1746.83;-824026048.58
181496;"fra.reg.prop. L´HOSPITALET-4";140.46;0.00;-712741517.72
181497;"fra.reg.prop. L´HOSPITALET-4";146.36;0.00;-708102800.88
181498;"fra.reg.prop. L´HOSPITALET-4";134.11;0.00;-717734460.74
181499;"fra.reg.prop. L´HOSPITALET-4";143.75;0.00;-710155193.05
181500;"fra.reg.prop. L´HOSPITALET-4";116.05;0.00;-731934295.60
181501;"fra.reg.prop. L´HOSPITALET-4";416.55;0.00;-495668390.15

-- Executing query:
SELECT A1.oid, A1.concepte, A1.deure, A1.haver,

sum( COALESCE( A1.deure, 0 ) - COALESCE( A2.haver, 0 ))
AS value_sum

FROM Assentaments AS A1

INNER JOIN Assentaments AS A2

ON A1.oid <= A2.oid

WHERE A1.numero=11189

GROUP BY A1.oid, A1.concepte, A1.deure, A1.haver

ORDER BY A1.oid;

Total query runtime: 58371 ms.
10 rows retrieved.

using postgreSQL from Navicat ...

GlobalGest=# SELECT A1.oid, A1.concepte, A1.deure, A1.haver,
sum( COALESCE( A1.deure, 0 ) - COALESCE( A2.haver, 0 ))
AS value_sum
FROM Assentaments AS A1
INNER JOIN Assentaments AS A2
ON A1.oid <= A2.oid
WHERE A1.numero=11189
GROUP BY A1.oid, A1.concepte, A1.deure, A1.haver
ORDER BY A1.oid;
+--------+-------------------------------+--------+---------
+---------------+
| oid | concepte | deure | haver |
value_sum |
+--------+-------------------------------+--------+---------
+---------------+
| 180108 | fra.reg.prop. L´HOSPITALET-4 | 381.19 | 0.00 |
-523787081.74 |
| 180109 | fra.reg.prop. L´HOSPITALET-4 | 121.54 | 0.00 |
-728296890.68 |
| 180110 | fra.reg.prop. L´HOSPITALET-4 | 146.82 | 0.00 |
-708385624.70 |
| 180111 | fra.reg.prop. L´HOSPITALET-4 | 0.00 | 1746.83 |
-824026048.58 |
| 181496 | fra.reg.prop. L´HOSPITALET-4 | 140.46 | 0.00 |
-712741517.72 |
| 181497 | fra.reg.prop. L´HOSPITALET-4 | 146.36 | 0.00 |
-708102800.88 |
| 181498 | fra.reg.prop. L´HOSPITALET-4 | 134.11 | 0.00 |
-717734460.74 |
| 181499 | fra.reg.prop. L´HOSPITALET-4 | 143.75 | 0.00 |
-710155193.05 |
| 181500 | fra.reg.prop. L´HOSPITALET-4 | 116.05 | 0.00 |
-731934295.60 |
| 181501 | fra.reg.prop. L´HOSPITALET-4 | 416.55 | 0.00 |
-495668390.15 |
+--------+-------------------------------+--------+---------
+---------------+
10 rows in set (49.94 sec)

GlobalGest=#

The value_sum is wrong, in the first row should be: 381.19 and go on ...

but maybe is a silly question, but I'm a really novice, i thought
this should be really-really faster ... near 50 seconds is too much ...

regards and really thanks for your help.