Question

T-sql

Is it possible to check if ip-address and dns name is the same ?

Answer 1

HOST_NAME() returns the client’s computer name.

This code resolves its ip address using ping and xp_cmdshell:

set nocount on
declare @ip varchar(255), @cmd varchar(100) 
set @cmd = 'ping -n 1 ' + HOST_NAME() 
create table #temptb (grabfield varchar(255)) 
insert into #temptb exec master.dbo.xp_cmdshell @cmd 
select @ip = substring(grabfield,  charindex('[',grabfield)+1,
 charindex(']',grabfield)-charindex('[',grabfield)-1) from #temptb  where left(grabfield,7) = 'Pinging' 
print @ip 
drop table #temptb
set nocount off 

Source: http://www.sqlservercentral.com/Forums/Topic150196-8-1.aspx