动态sql语句

[weichao0311]

declare @fund nvarchar(1024)
set @fund = '[Fa],[Fb],[Fc],[Fd],[Fe]'


declare @sql nvarchar(2048)
set @sql = N'select region,sum([Fa]) as Fa, sum([Fb]) as Fb,sum(Fc) as Fc,sum(Fd) as Fd,sum([Fe]) as Fe
from mytemp
PIVOT
(
COUNT(AOMImportID) for fund in (' + @fund + ')
)
as PV
WHERE region in(''QINT'',''MINT'',''PINT'',''SINT'',''XINT'')
group by region'
print @sql

exec sp_executesql @sql

[中国风]

用法不正确

[中国风]

exec('select 
	*
from 
	(select * from mytemp where region   in(''QINT'',''MINT'',''PINT'',''SINT'',''XINT''))T
pivot
	(COUNT(AOMImportID)   for   fund   in   ([Fa],[Fb],[Fc],[Fd],[Fe]))PV')

[中国风]

--------------------------------------------------------------------------------

动态sql语句基本语法 
1 :普通SQL语句可以用Exec执行 

eg:   Select * from tableName 
         Exec('select * from tableName') 
         Exec sp_executesql N'select * from tableName'    -- 请注意字符串前一定要加N 

2:字段名，表名，数据库名之类作为变量时，必须用动态SQL 

eg:   
declare @fname varchar(20) 
set @fname = 'FiledName' 
Select @fname from tableName              -- 错误,不会提示错误，但结果为固定值FiledName,并非所要。 
Exec('select ' + @fname + ' from tableName')     -- 请注意 加号前后的 单引号的边上加空格 

当然将字符串改成变量的形式也可 
declare @fname varchar(20) 
set @fname = 'FiledName' --设置字段名 

declare @s varchar(1000) 
set @s = 'select ' + @fname + ' from tableName' 
Exec(@s)                -- 成功 
exec sp_executesql @s   -- 此句会报错 



declare @s Nvarchar(1000)  -- 注意此处改为nvarchar(1000) 
set @s = 'select ' + @fname + ' from tableName' 
Exec(@s)                -- 成功     
exec sp_executesql @s   -- 此句正确 

3. 输出参数 
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 tableName ' 
exec sp_executesql @sqls,N'@a int output',@num output 
select @num 

[cxmcxm]

select region,sum([Fa]) as Fa, sum([Fb]) as Fb,sum(Fc) as Fc,sum(Fd) as Fd,sum([Fe]) as Fe
from mytemp
PIVOT
(
COUNT(AOMImportID) for fund in ([Fa],[Fb],[Fc],[Fd],[Fe])
)
as PV
WHERE region in('QINT','MINT','PINT','SINT','XINT')
group by region
不是正确的sql server2000语句

[-狙击手-]

05吗？

[谁是谁的谁]

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