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INDEXPROPERTY (Transact-SQL)

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.

Topic link icon Transact-SQL Syntax Conventions


INDEXPROPERTY ( object_ID , index_or_statistics_name , property ) 
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.

NoteNote

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 key for a table.

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.

1 = True

0 = False or XML index.

IsPageLockDisallowed

Page-locking value set by the ALLOW_PAGE_LOCKS option of ALTER INDEX.

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.

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.

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 and Troubleshooting Metadata Visibility.

The following example returns the values for the IsClustered, IndexDepth, and IndexFillFactor properties for the PK_Employee_EmployeeID index of the Employee table.

USE AdventureWorks2008R2;
GO
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];
GO


Here is the result set:

Is Clustered Index Depth Fill Factor 
------------ ----------- ----------- 
1            2           0

(1 row(s) affected)

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