Help with Over

Question

Greetings everyone,
I'm trying to use the over function but with two sums, the point is to get the points of a sum to make a graphic that goes up and down depending on this values.
This is the first part thats working
SELECT {RegistoDeposito}.[Data],
SUM({RegistoDeposito}.[Quantidade]) over (order by {RegistoDeposito}.[Data] ASC) as total, '','',''
FROM {RegistoDeposito}
But now I need that that value gets subtracted by the values that come from this column: {Enchimentos}.[Quantidade].
I have no ideia how to do this, please help me if you can.

Answer 1

If a few rows, here's a suggestion.
IF Object_ID('tempdb..#MovSeq','U') is not null DROP TABLE #MovSeq;
-- agrupa entradas e saídas, gerando tabela temporária
;with Movimento as (
SELECT [Date], -Quantidade
from RegistoDeposito
union all
SELECT [Date], Quantidade
from Enchimentos
SELECT [Date], Sum(Quantidade) as Quantidade
into #MovSeq
from Movimento
group by [Date];
-- cria índice para agilizar pesquisa por data
CREATE clustered INDEX I1 on #MovSeq ([Date]);
-- acumula
SELECT [Date],
Quantidade= (SELECT Sum(Quantidade) from #MovSeq as M2 where M2.[Date] <= M.[Date])
from #MovSeq as M
order by [Date];
IF Object_ID('tempdb..#MovSeq','U') is not null DROP TABLE #MovSeq;
Or
-- acumula
SELECT M1.[Date],
Sum(M2.Quantidade) as Quantidade
from #MovSeq as M1 inner join
#MovSeq as M2
on M2.[Date] <= M1.[Date])
group by M1.[Date]
order by M1.[Date];
José Diz     Belo Horizonte, MG - Brasil
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