Generate Monthly based records in a period

Question

Here is my query to retreive the report for each month to get the paid and unpaid bookings

SELECT tbc.tbcId
    ,tbc.tbcName
    ,(
        SELECT COUNT(bb.bbId)
        FROM MyBooking bb
        WHERE bb.tbcId = tbc.tbcId
            AND bb.bbIsPayed = 1
            AND Year(bb.bbDate) = '2016' --proc parameter @year
            AND Month(bb.bbDate) = '7' --proc parameter @month
        ) AS PaidCount
    ,(
        SELECT SUM(CASE 
                    WHEN bb.bbVAT = 1
                        THEN (bb.bbPrice / 100) * 80
                    ELSE bb.bbPrice
                    END)
        FROM MyBooking bb
        WHERE bb.tbcId = tbc.tbcId
            AND bb.bbIsPayed = 1
            AND Year(bb.bbDate) = '2016' --proc parameter @year
            AND Month(bb.bbDate) = '7' --proc parameter @month
        ) AS PaidAmount
    ,(
        SELECT COUNT(bb.bbId)
        FROM MyBooking bb
        WHERE bb.tbcId = tbc.tbcId
            AND bb.bbIsPayed <> 1
            AND Year(bb.bbDate) = '2016' --proc parameter @year
            AND Month(bb.bbDate) = '7' --proc parameter @month
        ) AS UnpaidCount
    ,(
        SELECT SUM(CASE 
                    WHEN bb.bbVAT = 1
                        THEN (bb.bbPrice / 100) * 80
                    ELSE bb.bbPrice
                    END)
        FROM MyBooking bb
        WHERE bb.tbcId = tbc.tbcId
            AND bb.bbIsPayed <> 1
            AND Year(bb.bbDate) = '2016' --proc parameter @year
            AND Month(bb.bbDate) = '7' --proc parameter @month
        ) AS UnPaidAmount
FROM BookingCategories tbc
WHERE tbc.tbcIncludeReport = 1
    AND tbc.tbcId IN (
        SELECT DISTINCT con.tbcId
        FROM CategoryXTags con
        WHERE (
                con.ttId = 26
                OR con.ttId = 23
                OR con.ttId = 24
                )
        )
ORDER BY tbc.tbcName ASC;

I have to run this for a given period of time, example Jan 2016 to Aug 2016.

As of now I run this in a loop by passing a @year and @month variable.

Is it possible to just pass @FromDate and @Todate and generate the report for each month in a same query? I couldnt able to think much in SQL to achieve this.

Answer 1

Untested, but I think will shrink your process down

Declare @Date1 Date = '2016-01-01'
Declare @Date2 Date = '2016-08-31'

Select Period       = EOMonth(bb.bbDate)
      ,tbc.tbcId
      ,tbc.tbcName
      ,PaidCount    = sum(case when bb.bbIsPayed=1 then 1 else 0 end)
      ,PaidAmount   = sum(case when bb.bbIsPayed=1 and 1bb.bbVAT = 1 Then (bb.bbPrice / 100) * 80 ELSE bb.bbPrice end)
      ,UnpaidCount  = sum(case when bb.bbIsPayed<>1 then 1 else 0 end)
      ,UnPaidAmount = sum(case when bb.bbIsPayed <> 1 and bb.bbVAT = 1 Then (bb.bbPrice / 100) * 80 ELSE bb.bbPrice end)
 From  BookingCategories tbc
 Join  MyBooking bb on (bb.bbId = tbc.tbcId)
 Where tbc.tbcIncludeReport = 1
   and tbc.tbcId IN (26,26,24)
   and bb.bbDate between @Date1 and @Date2
 Group By 
       EOMonth(bb.bbDate)
      ,tbc.tbcId
      ,tbc.tbcName
 Order By 1,tbc.tbcName ASC