Kai Peters <kpet...@otaksoft.com> wrote:
> given a table with two columns (SaleDate, SaleVolume) is it possible in one
> query to obtain
> the following three column result set:
>
> SalesCurrentYear, SalesLastYEar, SalesAllyears
select
sum(SaleVolume * (SaleDate >= StartOfCurYear)) SalesCurrentYear,
sum(SaleVolume * (StartOfLastYear <= SaleDate and SaleDate <
StartOfCurYear)) SalesLastYear,
sum(SaleVolume) SalesAllYears
from Sales,
(select
date('now', 'start of year') StartOfCurYear,
date('now', 'start of year', '-1 years') StartOfLastYear);
--
Igor Tandetnik
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