IP address 与 bigint 之间的转换

SELECT  [dbo].f_IP2Int('60.173.12.140') -- 1017973900
select dbo.f_Int2IP(1017973900)   -- 60.173.12.140

select   dbo.f_IP2Int('12.168.0.1')  -- 212336641
select dbo.f_Int2IP(212336641)   -- 12.168.0.1

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[f_IP2Int]') and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[f_IP2Int]
GO

/*--字符型 IP 地址转换成数字 IP

--邹建 2004.08(引用请保留此信息)--*/

/*--调用示例

select dbo.f_IP2Int('192.168.0.11')
select dbo.f_IP2Int('12.168.0.1')
--*/
CREATE FUNCTION f_IP2Int(
@ip char(15)
)RETURNS bigint
AS
BEGIN
DECLARE @re bigint
SET @re=0
SELECT @re=@re+LEFT(@ip,CHARINDEX('.',@ip+'.')-1)*ID
,@ip=STUFF(@ip,1,CHARINDEX('.',@ip+'.'),'')
FROM(
SELECT ID=CAST(16777216 as bigint)
UNION ALL SELECT 65536
UNION ALL SELECT 256
UNION ALL SELECT 1)A
RETURN(@re)
END
GO

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[f_Int2IP]') and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[f_Int2IP]
GO

/*--数字 IP 转换成格式化 IP 地址

--邹建 2004.08(引用请保留此信息)--*/

/*--调用示例

select dbo.f_Int2IP(3232235531)
select dbo.f_Int2IP(212336641)
--*/
CREATE FUNCTION f_Int2IP(
@IP bigint
)RETURNS varchar(15)
AS
BEGIN
DECLARE @re varchar(15)
SET @re=''
SELECT @re=@re+'.'+CAST(@IP/ID as varchar)
,@IP=@IP%ID
from(
SELECT ID=CAST(16777216 as bigint)
UNION ALL SELECT 65536
UNION ALL SELECT 256
UNION ALL SELECT 1)a
RETURN(STUFF(@re,1,1,''))
END



资源  ：

      
ip地址与数字相互转换的sql函数   http://www.cnblogs.com/jillzhang/archive/2007/10/24/935621.html
       怎样将IP地址转换为数字   http://jingyan.baidu.com/article/200957617a9e13cb0721b4e5.html
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