一些比较难的sql问题：2(五)
1,col2,item' +
') v'
--生产的动态sql语句
select @sql
exec(@sql)
上面由于是动态生成语句，所以不能用局部的临时表，所以建了一个表。
下面是动态生成的sql语句，经过了格式化：
[sql]
select case when rownum = 1 then col1 else '' end as col1,
case when rownum = 1 then col2 else '' end as col2,
item,
v_0601 as '6/1',v_0602 as '6/2',v_0603 as '6/3',
v_0604 as '6/4',v_0605 as '6/5',
v_0606 as '6/6',v_0607 as '6/7',
v_0608 as '6/8',v_0609 as '6/9',
v_0610 as '6/10',v_0611 as '6/11',
v_0612 as '6/12',v_0613 as '6/13',
v_0614 as '6/14',v_0615 as '6/15',
v_0616 as '6/16',v_0617 as '6/17',
v_0618 as '6/18',v_0619 as '6/19',
v_0620 as '6/20',v_0621 as '6/21',
v_0622 as '6/22',v_0623 as '6/23',
v_0624 as '6/24',v_0625 as '6/25',
v_0626 as '6/26',v_0627 as '6/27',
v_0628 as '6/28',v_0629 as '6/29',
v_0630 as '6/30'
from
(
select col1,col2,item,
row_number() over(partition by col1,col2 order by item) as rownum,
SUM(case when date ='2013-06-01' then num else 0 end) as v_0601,
SUM(case when date ='2013-06-02' then num else 0 end) as v_0602,
SUM(case when date ='2013-06-03' then num else 0 end) as v_0603,
SUM(case when date ='2013-06-04' then num else 0 end) as v_0604,
SUM(case when date ='2013-06-05' then num else 0 end) as v_0605,
SUM(case when date ='2013-06-06' then num else 0 end) as v_0606,
SUM(case when date ='2013-06-07' then num else 0 end) as v_0607,
SUM(case when date ='2013-06-08' then num else 0 end) as v_0608,
SUM(case when date ='2013-06-09' then num else 0 end) as v_0609,
SUM(case when date ='2013-06-10' then num else 0 end) as v_0610,
SUM(case when date ='2013-06-11' then num else 0 end) as v_0611,
SUM(case when date ='2013-06-12' then num else 0 end) as v_0612,
SUM(case when date ='2013-06-13' then num else 0 end) as v_0613,
SUM(case when date ='2013-06-14' then num else 0 end) as v_0614,
SUM(case when date ='2013-06-15' then num else 0 end) as v_0615,
SUM(case when date ='2013-06-16' then num else 0 end) as v_0616,
SUM(case when date ='2013-06-17' then num else 0 end) as v_0617,
SUM(case when date ='2013-06-18' then num else 0 end) as v_0618,
SUM(case when date ='2013-06-19' then num else 0 end) as v_0619,
SUM(case when date ='2013-06-20' then num else 0 end) as v_0620,
SUM(case when date ='2013-06-21' then num else 0 end) as v_0621,
SUM(case when date ='2013-06-22' then num else 0 end) as v_0622,
SUM(case when date ='2013-06-23' then num else 0 end) as v_0623,
SUM(case when date ='2013-06-24' then num else 0 end) as v_0624,
SUM(case when date ='2013-06-25' then num else 0 end) as v_0625,
SUM(case when date ='2013-06-26' then num else 0 end) as v_0626,
SUM(case when date ='2013-06-27' then num else 0 end) as v_0627,
SUM(case when date ='2013-06-28' then num else 0 end) as v_0628,
SUM(case when date ='2013-06-29' then num else 0 end) as v_0629,
SUM(case when date ='2013-06-30' then num else 0 end) as v_0630
from tab
group by col1,col2,item
) v
5、这个语句怎么写？
我有一张表: