INDEXPROPERTY (Transact-SQL)

Cikk
12/30/2022

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW)

Returns the named index or statistics property value of a specified table identification number, index or statistics name, and property name. Returns NULL for XML indexes.

Transact-SQL syntax conventions

Syntax

INDEXPROPERTY ( object_ID , index_or_statistics_name , property )

Arguments

object_ID
Is an expression that contains the object identification number of the table or indexed view for which to provide index property information. object_ID is int.

index_or_statistics_name
Is an expression that contains the name of the index or statistics for which to return property information. index_or_statistics_name is nvarchar(128).

property
Is an expression that contains the name of the database property to return. property is varchar(128), and can be one of these values.

Note

Unless noted otherwise, NULL is returned when property is not a valid property name, object_ID is not a valid object ID, object_ID is an unsupported object type for the specified property, or the caller does not have permission to view the object's metadata.

Property	Description	Value
IndexDepth	Depth of the index.	Number of index levels. NULL = XML index or input is not valid.
IndexFillFactor	Fill factor value used when the index was created or last rebuilt.	Fill factor
IndexID	Index ID of the index on a specified table or indexed view.	Index ID
IsAutoStatistics	Statistics were generated by the AUTO_CREATE_STATISTICS option of ALTER DATABASE.	1 = True 0 = False or XML index.
IsClustered	Index is clustered.	1 = True 0 = False or XML index.
IsDisabled	Index is disabled.	1 = True 0 = False NULL = Input is not valid.
IsFulltextKey	Index is the full-text and semantic indexing key for a table.	Applies to: SQL Server 2008 (10.0.x) and later. 1 = True 0 = False or XML index. NULL = Input is not valid.
IsHypothetical	Index is hypothetical and cannot be used directly as a data access path. Hypothetical indexes hold column-level statistics and are maintained and used by Database Engine Tuning Advisor.	1 = True 0 = False or XML index NULL = Input is not valid.
IsPadIndex	Index specifies space to leave open on each interior node.	Applies to: SQL Server 2008 (10.0.x) and later. 1 = True 0 = False or XML index.
IsPageLockDisallowed	Page-locking value set by the ALLOW_PAGE_LOCKS option of ALTER INDEX.	Applies to: SQL Server 2008 (10.0.x) and later. 1 = Page locking is disallowed. 0 = Page locking is allowed. NULL = Input is not valid.
IsRowLockDisallowed	Row-locking value set by the ALLOW_ROW_LOCKS option of ALTER INDEX.	Applies to: SQL Server 2008 (10.0.x) and later. 1 = Row locking is disallowed. 0 = Row locking is allowed. NULL = Input is not valid.
IsStatistics	index_or_statistics_name is statistics created by the CREATE STATISTICS statement or by the AUTO_CREATE_STATISTICS option of ALTER DATABASE.	1 = True 0 = False or XML index.
IsUnique	Index is unique.	1 = True 0 = False or XML index.
IsColumnstore	Index is an xVelocity memory optimized columnstore index.	Applies to: SQL Server 2012 (11.x) and later. 1 = True 0 = False
IsOptimizedForSequentialKey	Index has optimization for last-page inserts enabled.	Applies to: SQL Server 2019 (15.x) and later. 1 = True 0 = False

Return Types

int

Exceptions

Returns NULL on error or if a caller does not have permission to view the object.

A user can only view the metadata of securables that the user owns or on which the user has been granted permission. This means that metadata-emitting, built-in functions such as INDEXPROPERTY may return NULL if the user does not have any permission on the object. For more information, see Metadata Visibility Configuration.

Examples

The following example returns the values for the IsClustered, IndexDepth, and IndexFillFactor properties for the PK_Employee_BusinessEntityID index of the Employee table in the AdventureWorks2022 database.

SELECT   
    INDEXPROPERTY(OBJECT_ID('HumanResources.Employee'),  
        'PK_Employee_BusinessEntityID','IsClustered')AS [Is Clustered],  
    INDEXPROPERTY(OBJECT_ID('HumanResources.Employee'),  
        'PK_Employee_BusinessEntityID','IndexDepth') AS [Index Depth],  
    INDEXPROPERTY(OBJECT_ID('HumanResources.Employee'),  
        'PK_Employee_BusinessEntityID','IndexFillFactor') AS [Fill Factor];

Here is the result set:

Is Clustered Index Depth Fill Factor   
------------ ----------- -----------   
1            2           0  
  
(1 row(s) affected)

Examples: Azure Synapse Analytics and Analytics Platform System (PDW)

The following example examines the properties of one of the indexes on the FactResellerSales table.

-- Uses AdventureWorks  
  
SELECT   
INDEXPROPERTY(OBJECT_ID('dbo.FactResellerSales'),  
    'ClusteredIndex_6d10fa223e5e4c1fbba087e29e16a7a2','IsClustered') AS [Is Clustered],  
INDEXPROPERTY(OBJECT_ID('dbo.FactResellerSales'),  
    'ClusteredIndex_6d10fa223e5e4c1fbba087e29e16a7a2','IsColumnstore') AS [Is Columnstore Index],  
INDEXPROPERTY(OBJECT_ID('dbo.FactResellerSales'),  
    'ClusteredIndex_6d10fa223e5e4c1fbba087e29e16a7a2','IndexFillFactor') AS [Fill Factor];  
GO

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