Sql-server – SQL Server : explicitly create an index on a primary key and unique fields

constraintindexsql serversql-server-2008

UPDATED:

I'll make the question clearer as the first answer isn't quite what I was looking for.

How can I execute this create table statement and ensure that the two automatically created indexes are stored on MY_INDEX_FILEGROUP as I am assuming that these automatically created indexes will be stored on MY_DATA_FILEGROUP that the table data will be stored in.

CREATE TABLE Product.Product(
    ProductId tinyint identity(1,1) constraint PK_Product_Product_ProductId primary key,
    ProductName varchar(50) unique not null,
    SupportEnded date default null null
) ON MY_DATA_FILEGROUP
GO

is it possible to seperate the automatically generated indexes into a different filegroup, from the data?

And as a seperate but related question is it possible to enforce a constraint like PRIMARY KEY or UNIQUE whilst preventing the automatic creation of the associated index?

Best Answer

How can I execute this create table statement and ensure that the two automatically created indexes are stored on MY_INDEX_FILEGROUP as I am assuming that these automatically created indexes will be stored on MY_DATA_FILEGROUP that the table data will be stored in.

The table will exist on whichever filegroup contains the clustered index, because the clustered index is the data.

By default, a primary key index is clustered, so if you specify a different filegroup for that, the table ends up there.

is it possible to seperate the automatically generated indexes into a different filegroup, from the data?

Yes, but don't. Bears will eat you.

And as a seperate but related question is it possible to enforce a constraint like PRIMARY KEY or UNIQUE whilst preventing the automatic creation of the associated index?

No, this is how SQL Server enforces the constraint behind the scenes. Technically, SQL could use any mechanism to enforce constraints; it just makes the most sense to use an index to do it.

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