Em 24/10/2012 20:37, Doug Chamberlin escreveu: > On 10/24/12 6:25 PM, Alexandre Benson Smith wrote: >> Em 24/10/2012 20:21, Doug Chamberlin escreveu: >>> On 10/24/12 5:54 PM, cornievs wrote: >>>> I have query which extract the sales per day from a table >>>> >>>> Select EXTRACT(YEAR from DT) as YEARNO, EXTRACT(YEARDAY from DT) AS DAYNO, >>>> SUM(DUE) from CLIENT_INVOICES group by YEARNO, WEEKNO. >>>> >>>> It works 100%, but only returns the dates with sales, I need it to also >>>> include the dates with zero sales, for example: >>>> >>>> YEARNO DAYNO SUM >>>> 2012 01 5000 >>>> 2012 02 6000 >>>> 2012 03 0 (or null will be fine) >>>> 2012 04 7000 >>> I would crate a reference table that contains all the years and days >>> that you want to report on. Then join the data you have to that table >>> using an outer join so that all dates in the reference table are in the >>> result set and those that have data from the client invoices will show it. >>> >> I used to do this way, but with CTE you create that "table" dynamically, >> another option is using EXECUTE STATEMENT or a SP to loop trough the days > I saw that. However, I don't see the advantage. Using a reference table > is simpler and clearer than using CTE or other code to generate the > reference values. > > > >
One don't need to "refill" the values, like at the beginning of each year... of course you could pre-fill i with a century of days... :)
