Re: How to obtain algebraic sum of equal lines

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"
>
> Regards,
> Ennio.
>
>
>

Perhaps I am not seeing the light but would the following not give sum
per titolo?

select sum(quantity),titolo from test_t group by titolo;

Oisin