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sys.hash_indexes (Transact-SQL)

  • Artykuł

Applies to: SQL Server 2014 (12.x) and later Azure SQL Database Azure SQL Managed Instance

Shows the current hash indexes and the hash index properties. Hash indexes are supported only on In-Memory OLTP (In-Memory Optimization).

The sys.hash_indexes view contains the same columns as the sys.indexes view and an additional column named bucket_count. For more information about the other columns in the sys.hash_indexes view, see sys.indexes (Transact-SQL).

Column name Data type Description
<inherited columns> Inherits columns from sys.indexes (Transact-SQL).
bucket_count int Count of hash buckets for hash indexes.

For more information about the bucket_count value, including guidelines for setting the value, see CREATE TABLE (Transact-SQL).

Permissions

The visibility of the metadata in catalog views is limited to securables that a user either owns, or on which the user was granted some permission.. For more information, see Metadata Visibility Configuration.

Examples

SELECT object_name([object_id]) AS 'table_name', [object_id],  
     [name] AS 'index_name', [type_desc], [bucket_count]   
FROM sys.hash_indexes   
WHERE OBJECT_NAME([object_id]) = 'T1';

See Also

Object Catalog Views (Transact-SQL)
Catalog Views (Transact-SQL)