se vuoi conoscere quale porta sta usando un istanza di sql server express, usa questo script
CREATE TABLE #GetPort
(
token varchar(100),
value varchar(20))
go DECLARE @inst varchar(200)
DECLARE @inst1 varchar(100)
--Determine registry path and key IF(charindex('\',@@servername) > 0)
BEGIN SELECT @inst = substring(@@servername,charindex('\',@@servername) ,50)
SELECT @inst = 'SOFTWARE\Microsoft\Microsoft SQL Server'+@inst+'\MSSQLServer\SuperSocketNetLib\Tcp' --SELECT @inst1 = 'TcpDynamicPorts' SELECT @inst1 = 'TcpPort' END ELSE BEGIN if SUBSTRING(@@VERSION,23,1) = '7'
begin SELECT @inst = 'SOFTWARE\Microsoft\MSSQLServer\Client\SuperSocketNetLib\VIA' SELECT @inst1 = 'DefaultServerPort' end else begin SELECT @inst = 'SOFTWARE\Microsoft\MSSQLServer\Client\SuperSocketNetLib\Tcp' SELECT @inst1 = 'DefaultPort' end END print @inst + '\\\\////'+ @inst1
INSERT #GetPort
EXEC master..xp_regread 'HKEY_LOCAL_MACHINE', @inst, @inst1
SELECT substring(@@servername,1,25) as ServerName, value as port FROM #GetPort
DROP TABLE #GetPort