请教各位，我这段存续过程有什麽问题?
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set @SQLStr='select count(*) from blog_PContent C left join Emp_Employee E on E.UserLoginID=C.UserLoginID where E.usertype=2'
set @SQL=@SQL+'and rtrim(E.UserName)= '''+ rtrim(@UserName) + ''''
怎么查询不出总数来？
