Calculate subtraction by a specific quarter of year

Question

I have some records after SQL generating:
YEARS MONTHS SUMMONTH SUMQUARTER QTR
2009 Jan      363639     855922 1  
2009 Feb      128305     855922 1  
2009 Mar      363978     855922 1  
2009 Apr      376633    1058871 2  
2009 May      299140    1058871 2  
2009 Jun      383098    1058871 2  
2009 Jul      435000    1063577 3  
2009 Aug      266227    1063577 3  
2009 Sep      362350    1063577 3  
2009 Oct      449366    1017906 4  
2009 Nov      280943    1017906 4  
2009 Dec      287597    1017906 4  
2010 Jan      418277     661083 1  
2010 Feb      129895     661083 1  
2010 Mar      112911     661083 1  
2010 Apr      163593     685625 2  
2010 May      228505     685625 2  
2010 Jun      293527     685625 2  
2010 Jul      451608    1044364 3  
2010 Aug      356683    1044364 3  
2010 Sep      236073    1044364 3  
2010 Oct      247365     798925 4  
2010 Nov      414100     798925 4  
2010 Dec      137460     798925 4  
24 rows selected The SUMQUARTER column sum up each quarter of a year... The qtr specify it belongs to which quarter.
The problem is how to have a subtraction of sumquarter between 2 different years to get the specific query result?
The difference is not the: max value-min value. It is the user-defined value that he want to input...
Let say... For example, the user want to see the substraction(sumquarter) between 2009 qtr=2 and 2010 qtr=2, user may change the parameter(years,qtr) of sql to view the record.
This mean the result should be: (1058871 - 685625)
Here is the SQL that I am currently using:
select years,months,summonth,sumquarter,qtr
from(
        select years,months,summonth,sumhour,hours,to_char(ym, 'Q') qtr,
                sum(sumhour) over(partition by years || to_char(ym, 'Q') order by years || to_char(ym, 'Q')) sumquarter,ym,
                count(days) over(partition by years,months,hours) days_month
        from(
                select   years, months, days, hours, mins, sumHour,
                         SUM (sumHour) OVER (PARTITION BY years,months,days) sumDay,
                         SUM (sumHour) OVER (PARTITION BY years,months) sumMonth,
                         SUM (sumHour) OVER (PARTITION BY years) sumyear,
                         to_date(years || months, 'YYYYMon', 'NLS_DATE_LANGUAGE=American') ym
                from  (
                        SELECT x.years, x.months, x.days, x.hours, x.mins, sum(x.value) as sumHour
                        FROM xmltest,
                             XMLTABLE ('$d/cdata/name' passing doc as "d"
                                        COLUMNS
                                          years integer path 'year',
                                          months varchar(3) path 'month',
                                          days varchar(2) path 'day',
                                          hours varchar(2) path 'hour',
                                          mins varchar(2) path 'minute',
                                          value float path 'value'
                                       ) as X
                        group by x.years, x.months, x.days, x.hours, x.mins
                        order by x.years, x.months, x.days
  group by years,months,summonth,sumquarter,qtr,ym
  order by ymThe sql pattern maybe something like this:...??
select ((select sumquarter from table where years=2009 and qtr=2) - (select sumquarter from table where years=2010 and qtr=2)) from tableActually, it doesn't work...
The result maybe look in this view:
SUBTRACT
373246Thanks everyone helps!!:)
Edited by: 920575 on 2012/3/27 上午 1:50

Answer 1

ok...I am so sorry to make you confused...
Here is my sql which combined with yours:
with tbl as (
select years,months,summonth,sumquarter,qtr
from(
        select years,months,summonth,sumhour,hours,to_char(ym, 'Q') qtr,
                sum(sumhour) over(partition by years || to_char(ym, 'Q') order by years || to_char(ym, 'Q')) sumquarter,ym,
                count(days) over(partition by years,months,hours) days_month
        from(
                select   years, months, days, hours, mins, sumHour,
                         SUM (sumHour) OVER (PARTITION BY years,months,days) sumDay,
                         SUM (sumHour) OVER (PARTITION BY years,months) sumMonth,
                         SUM (sumHour) OVER (PARTITION BY years) sumyear,
                         to_date(years || months, 'YYYYMon', 'NLS_DATE_LANGUAGE=American') ym
                from  (
                        SELECT x.years, x.months, x.days, x.hours, x.mins, sum(x.value) as sumHour
                        FROM xmltest,
                             XMLTABLE ('$d/cdata/name' passing doc as "d"
                                        COLUMNS
                                          years integer path 'year',
                                          months varchar(3) path 'month',
                                          days varchar(2) path 'day',
                                          hours varchar(2) path 'hour',
                                          mins varchar(2) path 'minute',
                                          value float path 'value'
                                       ) as X
                        group by x.years, x.months, x.days, x.hours, x.mins
                        order by x.years, x.months, x.days
  group by years,months,summonth,sumquarter,qtr,ym
  order by ym
tagg as (
select years, qtr, sumquarter
   from tbl
   group by years, qtr, sumquarter
       select ta.years Ya, ta.qtr Qa, tb.years Yb, tb.qtr Qb, abs(ta.sumquarter - tb.sumquarter) diffAB
         from tagg ta
         join tagg tb
         on (1=1)
       where ta.years=2010 and ta.qtr=1
           and tb.years=2009 and tb.qtr=1;It will display as "No data to read from socket".........
I can provided the insert query if you would like to have one. I can't paste at here because it is so large...