godeclare @n int = 1;
while(@n < 1000)
begin
insert into test values(char(65+((cast(rand()*100 as int)) % 26)),char(65+((cast(rand()*100 as int)) % 26)),char(65+((cast(rand()*100 as int)) % 26)),char(65+((cast(rand()*100 as int)) % 26)),char(65+((cast(rand()*100 as int)) % 26)));
set @n += 1;
endcreate table [user](name char(1));
goinsert into [user]
select 'a' as name
union all select 'b'
union all select 'c'
union all select 'd'
union all select 'e'
union all select 'f'
union all select 'g'
union all select 'h'
union all select 'i'
union all select 'j'
union all select 'k'
union all select 'l'
union all select 'm'
union all select 'n'
union all select 'o'
union all select 'p'
union all select 'q'
union all select 'r'
union all select 's'
union all select 't'
union all select 'u'
union all select 'v'
union all select 'w'
union all select 'x'
union all select 'y'
union all select 'z'
goselect t.name,sum(t.c1cnt) as c1,sum(t.c2cnt) as c2,sum(t.c3cnt) as c3,sum(t.c4cnt) as c4,sum(t.c5cnt) as c5 from
(select u.name, case when t.c1 = u.name then t.cnt end as c1cnt
,case when t.c2 = u.name then t.cnt end as c2cnt
,case when t.c3 = u.name then t.cnt end as c3cnt
,case when t.c4 = u.name then t.cnt end as c4cnt
,case when t.c5 = u.name then t.cnt end as c5cnt
from [user] u,(select c1,c2,c3,c4,c5,count(1) as cnt
from test
group by grouping sets((c1),(c2),(c3),(c4),(c5))) as t
) as t
group by t.name
以上示例只是應一位大蝦寫出來的,在大資料量操作上,不敢恭維.
本示例純屬戲作.正規應用下,要保證資料量足夠小,方可使用.
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