行列转换 sqlserver
忙忙停停花了两天时间弄出来的，这这里与大家共享，这个存储过程实现后，大伙就不用重复劳动啊！
表1
bill
0001
0002
0003
....
要根据表1得出结算如0001,0002,0003,......
declare @num int,
@sqls nvarchar(4000)
set @sqls='select count(*) from tableName'
exec(@sqls)
--如何将exec执行结果放入变量中？
declare @num int,
@sqls nvarchar(4000)
set @sqls='select @a=count(*) from t_paystock_h '
exec sp_executesql @sqls,N'@a int output',@num output
select @num
alter procedure usp_Tolineout
@table varchar(50),
@wherebill varchar(20),
@orderbill varchar(20),
@count_bill varchar(20),
@bill_value varchar(20),
@print_bill varchar(1000)
as--Author fly
begin
-- @table 表名 @wherebill 查询条件字段 @orderbill 排序字段 @count_bill 要统计的单号，也是要产生字符串的字段,@bill_value 单据号,@print_bill 得出的结果写入哪个字段
declare @cw_count int
declare @i int
declare @sql nvarchar(4000),
@sql2 nvarchar(4000),
@str_bill nvarchar(4000)
set @i=1
set @cw_count=1
set @sql = N'select @count = count(distinct '+@count_bill+') from '+@table+' where '+@wherebill+'='+''''+@bill_value+''''+''
exec sp_executesql @sql,N'@count int output',@cw_count output
while (@i<=@cw_count)
begin
set @sql2 = N'select top 1 @strbill=isnull(convert(varchar(100),@strbill),'''')+case isnull(@strbill,'''') when '''' then '''' else '','' end +convert(varchar(30),'+@count_bill+') from
(select top '+convert(varchar(10),@i,126)+' '+@count_bill+','+@wherebill+' from '+@table+' where bill='''+@bill_value+''' order by '+@orderbill+' desc) a
where '+@wherebill+'='''+@bill_value+''' order by '+@orderbill+' asc'
exec sp_executesql @sql2,N'@strbill varchar(500) output',@str_bill output
set @i=@i+1
end /***/
print '结果为：'+@str_bill
end
网上转载一例：
create table tb(truename varchar(20),shuxue int,yuwen int,yinyu int)
insert tb select
'张三', 100 ,80, 80 union all select
'李四', 90 ,90 ,60 union all select
'王五', 59, 80 ,44
select truename,fz=shuxue+yuwen+yinyu ,1 as id into #t
from tb
declare @s varchar(4000)
select @s=isnull(@s+',','')+'max(case when truename='''+truename+''' then fz else 0 end) ['+truename+']'
from #t
set @s='select id,'+@s+' from #t group by id'
exec(@s)
id 张三 李四 王五
----------- ----------- ----------- -----------
1 260 240 183
(1 行受影响)
drop table tb
drop table #t