SQL中与IP相关的常见问题-数据库专栏,SQL Server

1:得到客户端的ip地址
/************* ip  **************/
declare @ip varchar(20),@hst varchar(20),@sql varchar(100)
declare @str varchar(100)
set @str=ping +host_name()
create table #tmp(aa varchar(200))
insert #tmp exec master..xp_cmdshell @str
select top 1 @ip = replace(left(aa,charindex(:,aa)-1),reply from ,)
   from #tmp where aa like reply from %:%
drop table #tmp
select @ip

2:得到网卡的物理地址
create table #tb(re varchar(255))
insert into #tb exec master..xp_cmdshell ipconfig /all

select 网卡物理地址=substring(re,charindex(:,re)+1,255) from #tb where re like %physical address. . . . . . . . . :%

drop table #tb

3:    将ip地址段转成每三位用点号分开    
create function getip(@a varchar(15))
returns varchar(15)
as
begin
declare @s varchar(15)
set @s =
while charindex(.,@a) > 0
begin
 set @s = @s + right(000 + left(@a,charindex(.,@a)),4)
 set @a = right(@a,len(@a)-charindex(.,@a))
end
set @s = @s + right(000 + @a,3)
return @s
end

/*
select dbo.getip(202.1.110.2)
—————
202.001.110.002

（所影响的行数为 1 行）
*/
–drop function getip