Set Index Options

Article
11/22/2024

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric

This topic describes how to modify the properties of an index in SQL Server by using SQL Server Management Studio or Transact-SQL.

In This Article

Before you begin:

Limitations and Restrictions

Security
To modify the properties of an index, using:

SQL Server Management Studio

Transact-SQL

Before You Begin

Limitations and Restrictions

The following options are immediately applied to the index by using the SET clause in the ALTER INDEX statement: ALLOW_PAGE_LOCKS, ALLOW_ROW_LOCKS, OPTIMIZE_FOR_SEQUENTIAL_KEY, IGNORE_DUP_KEY, and STATISTICS_NORECOMPUTE.
The following options can be set when you rebuild an index by using either ALTER INDEX REBUILD or CREATE INDEX WITH DROP_EXISTING: PAD_INDEX, FILLFACTOR, SORT_IN_TEMPDB, IGNORE_DUP_KEY, STATISTICS_NORECOMPUTE, ONLINE, ALLOW_ROW_LOCKS, ALLOW_PAGE_LOCKS, MAXDOP, and DROP_EXISTING (CREATE INDEX only).

Security

Permissions

Requires ALTER permission on the table or view.

Using SQL Server Management Studio

To modify the properties of an index in Table Designer

In Object Explorer, click the plus sign to expand the database that contains the table on which you want to modify an index's properties.
Click the plus sign to expand the Tables folder.
Right-click the table on which you want to modify an index's properties and select Design.
On the Table Designer menu, click Indexes/Keys.
Select the index that you want to modify. Its properties will show up in the main grid.
Change the settings of any and all properties to customize the index.
Click Close.
On the File menu, select Savetable_name.

To modify the properties of an index in Object Explorer

In Object Explorer, click the plus sign to expand the database that contains the table on which you want to modify an index's properties.
Click the plus sign to expand the Tables folder.
Click the plus sign to expand the table on which you want to modify an index's properties.
Click the plus sign to expand the Indexes folder.
Right-click the index of which you want to modify the properties and select Properties.
Under Select a page, select Options.
Change the settings of any and all properties to customize the index.
To add, remove, or change the position of an index column, select the General page from the Index Properties - index_name dialog box. For more information, see Index Properties F1 Help

Using Transact-SQL

To see the properties of all the indexes in a table

The following example shows the properties of all indexes in a table in the AdventureWorks database.

SQL

SELECT i.name AS index_name
   , i.type_desc
   , i.is_unique
   , ds.type_desc AS filegroup_or_partition_scheme
   , ds.name AS filegroup_or_partition_scheme_name
   , i.ignore_dup_key
   , i.is_primary_key
   , i.is_unique_constraint
   , i.fill_factor
   , i.is_padded
   , i.is_disabled
   , i.allow_row_locks
   , i.allow_page_locks
   , i.has_filter
   , i.filter_definition
FROM sys.indexes AS i
   INNER JOIN sys.data_spaces AS ds
      ON i.data_space_id = ds.data_space_id
   WHERE is_hypothetical = 0 AND i.index_id <> 0
       AND i.object_id = OBJECT_ID('HumanResources.Employee')
;

To set the properties of an index

The following examples set the properties of indexes in the AdventureWorks database.

SQL

ALTER INDEX AK_SalesOrderHeader_SalesOrderNumber ON
    Sales.SalesOrderHeader
SET (
    STATISTICS_NORECOMPUTE = ON,
    IGNORE_DUP_KEY = ON,
    ALLOW_PAGE_LOCKS = ON
    )
;

SQL

ALTER INDEX ALL ON Production.Product
REBUILD WITH 
   (
       FILLFACTOR = 80
       , SORT_IN_TEMPDB = ON
       , STATISTICS_NORECOMPUTE = ON
   )
;

For more information, see ALTER INDEX (Transact-SQL).

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