首先創建測試表、添加數據。
create table #t(a int,b int,c int,d int,e int)
insert into #t values(1,2,3,4,5)
insert into #t values(1,2,3,4,6)
insert into #t values(1,2,3,4,7)
insert into #t values(1,2,3,4,8)
insert into #t values(1,3,3,4,5)
insert into #t values(1,3,3,4,6)
insert into #t values(1,3,3,4,8)
insert into #t values(1,3,3,4,7)

insert into #t values(2,2,2,4,5)
insert into #t values(2,2,3,4,6)
insert into #t values(2,2,4,4,7)
insert into #t values(2,2,5,4,8)
insert into #t values(2,3,6,4,5)
insert into #t values(2,3,3,4,6)
insert into #t values(2,3,3,4,8)
insert into #t values(2,3,3,4,7)

情況一：只有一個分類匯總列時，只需要一個合計。只需要增加with rollup即可。
select case when grouping(a)=1 then '合計' else cast(a as varchar) end a,
sum(b),sum(c),sum(d),sum(e) from #t group by a with rollup

情況二:有多個分類匯總列，只需要一個合計.增加rollup之后，需要增加判斷。
select case when grouping(a)=1 then '合計' else cast(a as varchar) end a,
??? b,
sum(c),sum(d),sum(e) from #t
group by a,b with rollup
having grouping(b)=0 or grouping(a)=1select case when grouping(a)=1 then '合計' else cast(a as varchar) end a,
??? b,
??? c,
sum(d),sum(e) from #t
group by a,b,c with rollup
having grouping(c)=0 or grouping(a)=1

情況三：有多個分類匯總列，需要全部的小計和合計。
select case when grouping(a)=1 then '合計' else cast(a as varchar) end a,
??? case when grouping(b)=1 and grouping(a)=0 then '小計' else cast(b as varchar) end b,
??? case when grouping(c)=1 and grouping(b)=0 then '小計' else cast(c as varchar) end c,
sum(d),sum(e) from #t
group by a,b,c with rollup
另外一種顯示小計的方式
select case when grouping(a)=1 then '合計'
??? when grouping(b)=1 then cast(a as varchar)+'小計'
??? else cast(a as varchar) end a,
??? case when grouping(b)=0 and grouping(c)=1
??? then cast(b as varchar)+'小計' else cast(b as varchar) end b,
??? case when grouping(c)=1 and grouping(b)=0
??? then '' else cast(c as varchar) end c,
sum(d),sum(e) from #t
group by a,b,c with rollup

情況四：有多個分類匯總列，需要部分的小計和合計
select case when grouping(a)=1 then '合計' else cast(a as varchar) end a,
??? b,
??? case when grouping(c)=1 and grouping(b)=0 then '小計' else cast(c as varchar) end c,
sum(d),sum(e) from #t
group by a,b,c with rollup
having grouping(a)=1 or grouping(b)=0
select case when grouping(a)=1 then '合計' else cast(a as varchar) end a,
??? case when grouping(b)=1 and grouping(a)=0 then '小計' else cast(b as varchar) end b,
??? c,
sum(d),sum(e) from #t
group by a,b,c with rollup
having grouping(a)=1 or grouping(b)=1 or grouping(c)=0

?

轉自：http://www.cnblogs.com/yiway/archive/2007/11/12/957281.html

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