SQL ´æ´¢¹ý³ÌÖÐ ±äÁ¿±íÃû²éѯÊä³ö½á¹û

declare @SqlStr nvarchar(100)
declare @show_num int
set @SqlStr=N'Select @conid=count(id) from '+'jk'
exec sp_executesql @SqlStr,N'@conid int output',@show_num output
print @show_num