该怎样写参数,该怎么解决

该怎样写参数

SQL code

declare @ytd int set @ytd= 'select' + isnull([Mtd201201],0.0) + isnull (Mtd201202,0.0) + isnull(Mtd201203,0.0) + isnull(Mtd201204,0.0) + isnull(Mtd201205,0.0) + isnull(Mtd201206,0.0) + isnull(Mtd201207,0.0) + isnull(Mtd201208,0.0) + isnull(Mtd201209,0.0) + isnull(Mtd201210,0.0) + isnull(Mtd201211,0.0) + isnull(Mtd201212,0.0) +' from dbo.RPT_resultA41  where companyid=1 and classify=1'print @ytd

[解决办法]
终于明白了：
declare @ytd int 
select @ytd=isnull([Mtd201201],0.0) + 
isnull (Mtd201202,0.0) + 
isnull(Mtd201203,0.0) + 
isnull(Mtd201204,0.0) + 
isnull(Mtd201205,0.0) + 
isnull(Mtd201206,0.0) + 
isnull(Mtd201207,0.0) + 
isnull(Mtd201208,0.0) + 
isnull(Mtd201209,0.0) + 
isnull(Mtd201210,0.0) + 
isnull(Mtd201211,0.0) + 
isnull(Mtd201212,0.0) from dbo.RPT_resultA41 where companyid=1 and classify=1
print @ytd

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