Creating a primary key as a non clustered index

Hi,

I have created a very simple table. Here is the script:

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[IndexTable]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[IndexTable]

GO

CREATE TABLE [dbo].[IndexTable] (
[Id] [int] NOT NULL ,
[Code] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL
) ON [PRIMARY]

GO

CREATE CLUSTERED INDEX [CusteredOnCode] ON [dbo].[IndexTable]([Id]) ON [PRIMARY]

GO

ALTER TABLE [dbo].[IndexTable] ADD
CONSTRAINT [PrimaryKeyOnId] PRIMARY KEY NONCLUSTERED
(
[Id]
) ON [PRIMARY]
GO

The records that i added are:

Id Code

1 a
2 b
3 aa
4 bb

Now when i query like

Select * from IndexTable

I expect the results as:

Id Code

1 a
3 aa
2 b
4 bb

as i have the clustered index on column Code.

But i m getting the results as:

Id Code

1 a
2 b
3 aa
4 bb

as per the primary key order that is a non clustered index.

Can anyone explain why it is happening?

Thanks

Nitin

It appears to me from the code above that you actually created the clustered index on the Id field.|||

As rottengeek noticed, you are creating the clustered index on column [Id], but even if you create it on column [code], does not expect any specific order if you are not using the "order by" clause in your "select" statement. That is the only way to assure a specific order.

Quaere Verum - Clustered Index Scans - Part I

http://www.sqlmag.com/articles/index.cfm?articleid=92886&

Quaere Verum - Clustered Index Scans - Part II

http://www.sqlmag.com/articles/index.cfm?articleid=92887&

Quaere Verum - Clustered Index Scans - Part III

http://www.sqlmag.com/articles/index.cfm?articleid=92888&

AMB

|||

you are correct, so i have modified it to have the clustered index on the Code field.

Hi,

I have created a very simple table. Here is the script:

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[IndexTable]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[IndexTable]

GO

CREATE TABLE [dbo].[IndexTable] (
[Id] [int] NOT NULL ,
[Code] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL
) ON [PRIMARY]

GO

CREATE CLUSTERED INDEX [CusteredOnCode] ON [dbo].[IndexTable]([Code]) ON [PRIMARY]

GO

ALTER TABLE [dbo].[IndexTable] ADD
CONSTRAINT [PrimaryKeyOnId] PRIMARY KEY NONCLUSTERED
(
[Id]
) ON [PRIMARY]
GO

The records that i added are:

Id Code

1 a
2 b
3 aa
4 bb

Now when i query like

Select * from IndexTable

I expect the results as:

Id Code

1 a
3 aa
2 b
4 bb

as i have the clustered index on column Code.

But i m getting the results as:

Id Code

1 a
2 b
3 aa
4 bb

as per the primary key order that is a non clustered index.

Can anyone explain why it is happening?

Thanks

Nitin