sql server ip地址between 如何查询

解决问题的场景

用户表里有很多IP地址，要求将表里所有IP地址分类到相应的IP端内，并求数量

利用T－SQL 进行定义相应的函数

create function dbo.fn_IP(@ip varchar(15))   
returns bigint   
begin   
    return parsename(@ip,4)*cast(16777216 as bigint)+parsename(@ip,3)*65536+parsename(@ip,2)*256+parsename(@ip,1)   
end  

declare  @tb table (id int,ip varchar(15))
insert @tb select 1,'10.210.128.207'
UNION ALL  select 2,'10.210.128.206'
UNION ALL  select 3,'10.210.128.205'
UNION ALL  select 4,'10.210.128.204'
UNION ALL  select 5,'10.210.128.203'
UNION ALL  select 6,'10.210.128.202'
UNION ALL  select 7,'10.210.128.201'

select id,ip,dbo.fn_IP(ip) from @tb
where dbo.fn_IP(ip) between  dbo.fn_IP('10.210.128.203')      and dbo.fn_IP('10.210.128.205')