Indexes and File groups

[jens.aggergren]

Something strange.

I have a database(SQL2000) with two file group(on seperate physical
drives).
One is meant for table data[PRIMARY] and one for indexes [INDEX].

So i create a table on the [PRIMARY] file group, and fill in
data.

Next I build a clustered index on the table, on the [INDEX] filegroup.

Once the index is built, the database now indicates that the filegroup
for the table [INDEX]! and not [PRIMARY] as i originally set it up for!

My question it then: Has the table been moved or is this somehow an
error in SQL server?
I would really appreciate any thought anyone might have on this?

[johnbandettini]

Jens

A clustered index is the table (Well not quiet, but close enough). It
is impossible to have a clustered index on a different filegroup from
the data. You can build non-clustered on a seperate filegroup.

I suggest you rebuild your clustered index on your primary filegroup.
Regards

John

[Jens]

Aha! Solved some mysteries for me :-). Thank you very much.
I guess i didn´t quite understand how clustered indexes worked.

Actually i have a bunch of tables with clustered indexes which
currently reside my file group for indexes. The good news is,if I
understand you correctly,
the if I simply rebuild the clustered index on my data file group
the table data will be moved back.

[johnbandettini]

Jens

Yes, rebuilding the clustered index will move the table. You can also
do it through enterprise manager, using design table, this rebuilds the
index for you.

Regards

John

[Jens]

I´m planning to recreate the clustered index like this:

CREATE
CLUSTERED INDEX [idx-clusteredindex]
ON
[dbo].[TABLE_NAME]([COLOUMN_NANE])
WITH
DROP_EXISTING,
FILLFACTOR = 90
ON
[PRIMARY]

As I understand this will alse cause all non-clustered index
on the table to be rebuilt/recalculated as well.
Is this infact the case of do I have to
do i have to do it explicitly afterwards like:

DBCC DBREINDEX ([dbo].[TABLE_NAME],[idx-nonclustered],90)

jo************@yahoo.co.uk wrote:

Jens

Yes, rebuilding the clustered index will move the table. You can also
do it through enterprise manager, using design table, this rebuilds the index for you.

Regards

John