社区问的人太多了，保存一个备用
--
建立测试环境
set
nocount
on
create
table
test(model
varchar
(
20
),date
int
,qty
int
)
insert
into
test
select
'
a
'
,
'
8
'
,
'
10
'
insert
into
test
select
'
a
'
,
'
10
'
,
'
50
'
insert
into
test
select
'
b
'
,
'
100
'
insert
into
test
select
'
b
'
,
'
9
'
,
'
200
'
insert
into
test
select
'
b
'
,
'
100
'
insert
into
test
select
'
c
'
,
'
200
'
insert
into
test
select
'
d
'
,
'
300
'
insert
into
test
select
'
e
'
,
'
11
'
,
'
250
'
insert
into
test
select
'
e
'
,
'
12
'
,
'
100
'
insert
into
test
select
'
f
'
,
'
150
'
go
--
测试
declare
@sql
varchar
(
8000
)
set
@sql
=
'
select model,
'
select
@sql
=
@sql
+
'
sum(case when date=
'''
+
cast
(date
as
varchar
(
10
))
+
'''
then qty else 0 end)[
'
+
cast
(date
as
varchar
(
10
))
+
'
],
'
from
(
select
distinct
top
100
percent
date
from
test
order
by
date)a
set
@sql
=
left
(
@sql
,
len
(
@sql
)
-
1
)
+
'
from test group by model
'
exec
(
@sql
)
--
删除测试环境
drop
table
test
set
nocount
off
/**/
/*
model 8 9 10 11 12
-------------------- ----------- ----------- ----------- ----------- -----------
a 10 0 50 0 0
b 100 200 100 0 0
c 0 0 200 0 0
d 0 0 300 0 0
e 0 0 0 250 100
f 0 0 0 0 150
*/
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