How to generate a range of numbers between two numbers?

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执念已碎
执念已碎 2020-11-22 10:16

I have two numbers as input from the user, like for example 1000 and 1050.

How do I generate the numbers between these two numbers, using

30条回答
  •  醉酒成梦
    2020-11-22 10:38

    Nothing new but I rewrote Brian Pressler solution to be easier on the eye, it might be useful to someone (even if it's just future me):

    alter function [dbo].[fn_GenerateNumbers]
    (   
        @start int,
        @end  int
    ) returns table
    return
    
    with 
    b0 as (select n from (values (0),(0x00000001),(0x00000002),(0x00000003),(0x00000004),(0x00000005),(0x00000006),(0x00000007),(0x00000008),(0x00000009),(0x0000000A),(0x0000000B),(0x0000000C),(0x0000000D),(0x0000000E),(0x0000000F)) as b0(n)),
    b1 as (select n from (values (0),(0x00000010),(0x00000020),(0x00000030),(0x00000040),(0x00000050),(0x00000060),(0x00000070),(0x00000080),(0x00000090),(0x000000A0),(0x000000B0),(0x000000C0),(0x000000D0),(0x000000E0),(0x000000F0)) as b1(n)),
    b2 as (select n from (values (0),(0x00000100),(0x00000200),(0x00000300),(0x00000400),(0x00000500),(0x00000600),(0x00000700),(0x00000800),(0x00000900),(0x00000A00),(0x00000B00),(0x00000C00),(0x00000D00),(0x00000E00),(0x00000F00)) as b2(n)),
    b3 as (select n from (values (0),(0x00001000),(0x00002000),(0x00003000),(0x00004000),(0x00005000),(0x00006000),(0x00007000),(0x00008000),(0x00009000),(0x0000A000),(0x0000B000),(0x0000C000),(0x0000D000),(0x0000E000),(0x0000F000)) as b3(n)),
    b4 as (select n from (values (0),(0x00010000),(0x00020000),(0x00030000),(0x00040000),(0x00050000),(0x00060000),(0x00070000),(0x00080000),(0x00090000),(0x000A0000),(0x000B0000),(0x000C0000),(0x000D0000),(0x000E0000),(0x000F0000)) as b4(n)),
    b5 as (select n from (values (0),(0x00100000),(0x00200000),(0x00300000),(0x00400000),(0x00500000),(0x00600000),(0x00700000),(0x00800000),(0x00900000),(0x00A00000),(0x00B00000),(0x00C00000),(0x00D00000),(0x00E00000),(0x00F00000)) as b5(n)),
    b6 as (select n from (values (0),(0x01000000),(0x02000000),(0x03000000),(0x04000000),(0x05000000),(0x06000000),(0x07000000),(0x08000000),(0x09000000),(0x0A000000),(0x0B000000),(0x0C000000),(0x0D000000),(0x0E000000),(0x0F000000)) as b6(n)),
    b7 as (select n from (values (0),(0x10000000),(0x20000000),(0x30000000),(0x40000000),(0x50000000),(0x60000000),(0x70000000)) as b7(n))
    
    select s.n
    from (
        select
              b7.n
            | b6.n
            | b5.n
            | b4.n
            | b3.n
            | b2.n
            | b1.n
            | b0.n
            + @start
             n
        from b0
        join b1 on b0.n <= @end-@start and b1.n <= @end-@start
        join b2 on b2.n <= @end-@start
        join b3 on b3.n <= @end-@start
        join b4 on b4.n <= @end-@start
        join b5 on b5.n <= @end-@start
        join b6 on b6.n <= @end-@start
        join b7 on b7.n <= @end-@start
    ) s
    where @end >= s.n
    
    GO
    

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