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Works on SQL 2005 but not SQL 2000?

Author

Topic

specex
Starting Member

6 Posts

Posted - 2008-11-28 : 05:14:04

Hello experts

I found some sample code on http://www.codeproject.com/KB/IP/PingMonitor.aspx. When i run the SQL statement in SQL 2005 Server and it's works fine but when i run in SQL 2000 Server it shows error.

There are two tables from the example, PingLog and HostList

The SQL statement as follows:

SELECT AllPing.Host, AllPing.RecordingDate, AllPing.Status FROM PingLog AS AllPing
INNER JOIN (SELECT Host, MAX(RecordingDate) AS LastRecordingDate FROM PingLog GROUP BY Host) LastPing
ON AllPing.Host=LastPing.Host AND AllPing.RecordingDate=LastPing.LastRecordingDate
INNER JOIN HostList ON HostList.Host=AllPing.Host
WHERE HostList.ShowInMonitor='Y' ORDER BY Host

Hope any SQL experts can help me on this, thanks

SwePeso
Patron Saint of Lost Yaks

30421 Posts

Posted - 2008-11-28 : 05:31:42

What is the error?

E 12°55'05.63"
N 56°04'39.26"

SwePeso
Patron Saint of Lost Yaks

30421 Posts

Posted - 2008-11-28 : 05:36:56

I think the error derives from the ORDER BY statement, because the Host column name is found in two tables.
Prefix your ORDER BY Host column name with correct alias name, for example

ORDER BY	AllPing.Host

E 12°55'05.63"
N 56°04'39.26"

specex
Starting Member

6 Posts

Posted - 2008-11-28 : 05:40:23

Oppps, i forgot to includes it, so sorry...

here the error..

Msg 209, Level 16, State 1, Line 1
Ambiguous column name 'Host'.

FYI, when i just only includes the 1st three rows, that is..

SELECT AllPing.Host, AllPing.RecordingDate, AllPing.Status FROM PingLog AS AllPing
INNER JOIN (SELECT Host, MAX(RecordingDate) AS LastRecordingDate FROM PingLog GROUP BY Host) LastPing
ON AllPing.Host=LastPing.Host AND AllPing.RecordingDate=LastPing.LastRecordingDate

it can shows the data but i like to includes all five rows in order to display the data correctly. TQ

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2008-11-28 : 05:41:03

quote:
Originally posted by Peso

I think the error derives from the ORDER BY statement, because the Host column name is found in two tables.
Prefix your ORDER BY Host column name with correct alias name, for example
ORDER BY AllPing.Host

E 12°55'05.63"
N 56°04'39.26"

out of curiosity, why it worked in sql 2005 then?

SwePeso
Patron Saint of Lost Yaks

30421 Posts

Posted - 2008-11-28 : 05:48:07

It assumed that Host colum name from LastPing derived table is an alias.
SQL Server 2005 tries with aliases first, and then "real" column names.

E 12°55'05.63"
N 56°04'39.26"

SwePeso
Patron Saint of Lost Yaks

30421 Posts

Posted - 2008-11-28 : 05:49:59

See this proof

DECLARE	@Sample TABLE
	(
		i INT,
		j INT
	)

INSERT	@Sample
SELECT	1, 1 UNION ALL
SELECT	2, 2

SELECT		s.i,
		u.j
FROM		(
			SELECT	-i AS i,
				j
			FROM	@Sample
		) AS s
CROSS JOIN	@Sample AS u
ORDER BY	i

If you however do a SELECT * you will get the error "ambiguous name".

E 12°55'05.63"
N 56°04'39.26"

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2008-11-28 : 05:52:57

Oh...i see
thanks Peso for clarification

SwePeso
Patron Saint of Lost Yaks

30421 Posts

Posted - 2008-11-28 : 05:56:05

You're welcome.

E 12°55'05.63"
N 56°04'39.26"

specex
Starting Member

6 Posts

Posted - 2008-11-28 : 09:32:16

That's do the trick! Thanks Peso..

Another same problem is when i try to create these two tables (PingLog and HostList)

CREATE TABLE HostList (
    ID int IDENTITY(1,1) NOT NULL,
    Host nvarchar(50) NULL,
    IsHost char(1) NULL,
    ShowInMonitor char(1) NULL,
    DoPing char(1) NULL,
    PingFreq int NULL,
    IDparent int NULL,
    CONSTRAINT PK_HostList PRIMARY KEY CLUSTERED (ID ASC)
    WITH (PAD_INDEX  = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO

CREATE TABLE PingLog (
    Host varchar(50) NOT NULL,
    Status varchar(5) NOT NULL,
    RecordingDate datetime NOT NULL,
    CONSTRAINT [PK_PingLog] PRIMARY KEY CLUSTERED (Host ASC, Status ASC, RecordingDate ASC)
    WITH (PAD_INDEX  = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO

the error is

Msg 170, Level 15, State 1, Line 10
Line 10: Incorrect syntax near '('.
Msg 170, Level 15, State 1, Line 7
Line 7: Incorrect syntax near '('.

But this work on sql 2005 but not 2000. The tables only can be created on sql 2000 when i remove this line...

WITH (PAD_INDEX  = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]

How can i maintains the structure of the original scripts by do some modification? Thanks mate

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2008-11-28 : 09:54:59

the PAD_INDEX & IGNORE_DUP_KEY features are only available from SQL 2005 onwards

specex
Starting Member

6 Posts

Posted - 2008-11-28 : 10:26:52

if removing

 WITH (PAD_INDEX  = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]

won't affect the operation of the program then is fine, so thanks 4 all the comments, guys...

regards,

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