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Re: How to obtain algebraic sum of equal lines

From: Frank Bax <fbax(at)sympatico(dot)ca>
To: pgsql-novice(at)postgresql(dot)org
Subject: Re: How to obtain algebraic sum of equal lines
Date: 2006-04-25 20:41:46
Message-ID: 5.2.1.1.0.20060425163911.058404e0@pop6.sympatico.ca (view raw or flat)
Thread:
Lists: pgsql-novice
At 04:12 PM 4/25/06, Ennio-Sr wrote:

>Hi all,
>Is it possible, given the following table:
>
>cod_rif | titolo | quantity |   cmf   |  u_qq  |  mont   | vend |  sum
>---------+--------+----------+---------+--------+---------+------+-------
>  26      | aaa    |    -1000 | 6.11098 |  6.176 |  6.1110 | t    | -1000
>  7       | aaa    |     2500 |  25.455 |      0 | 60.0897 | f    |  2500
>  28      | bbb    |     2700 |   3.862 |    4.6 |  4.1957 | f    |  2700
>  3       | bbb    |      500 |   6.057 | 10.129 | 18.7311 | f    |   500
>  34      | bbb    |     -700 |       0 |      0 |  0.0000 | t    |  -700
>  6       | bbb    |     -500 |   2.703 |  4.757 |  3.7151 | f    |  -500
>  30      | ccc    |     5000 |   1.717 |  1.489 |  1.7170 | f    |  5000
>  33      | ccc    |    10000 |    4.36 |      0 |  4.3600 | f    | 10000
>  11      | ddd    |    -1500 |  10.537 |  4.021 | 20.5815 | t    | -1500
>  32      | ddd    |     1500 | 0.55896 |  1.119 |  0.5590 | f    |  1500
>(10 rows)
>
>to get a selection whereby the algebraic sum of "quantity" for each equal 
>'titolo'
>is returned?
>
>I tried this query with no result:
>psql finanza -c "select * , (sum(quantity)) from  test_t group by cod_rif, 
>titolo, quantity, cmf, u_qq, mont, vend order by titolo asc"

psql finanza -c "select titilo, (sum(quantity)) from  test_t group by 
titolo order by titolo asc"



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Subject: Re: How to obtain algebraic sum of equal lines
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