在SQL Server 2005中实现素数计算

我将提出一个挑战，谁能用SQLSEERVER提出计算素数最好的方法，我用了一个新的特点CTE和某些TSQL实现，但均不理想，前者（CTE）有限制，而后者（TSQL）产生一百万个素数用了7分种你可以干的更好么？这儿是我的一些代码段落

（T-SQL实现）

set nocount on

declare @prime table (prime int not null primary key)

--insert into @prime values (2)

--insert into @prime values (3)

--insert into @prime values (5)

--insert into @prime values (7)

--insert into @prime values (11)

declare @number int, @pc int

set @number = 13

set @pc = 1

while @pc < 1000000

begin

if not exists (select 1 from @prime where @number % prime = 0 and prime < sqrt(@number) )

begin

insert into @prime select @number

set @pc = @pc +1

end

set @number = @number

+ case when @number %2 = 1 then 2

when @number %3 = 2 then 2

when @number %5 = 4 then 2

when @number %7 = 6 then 2

when @number %11 = 10 then 2

else 1 end

end

select @pc

和（CTE实现）

with seq

as( select 13 number

union all

select s.number

+ case when s.number %2 = 1 then 2

when s.number %3 = 2 then 2

when s.number %5 = 4 then 2

when s.number %7 = 6 then 2

when s.number %11 = 10 then 2

else 1 end

from seq s

where number < 32767

)

, prime as (

select s.number

from seq s

where not exists ( select 1 from seq s2 where s2.number < s.number and (s.number) % s2.number = 0)

)

select *

from prime

option (MAXRECURSION 32767)

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