sys.partitions (Transact-SQL)

THIS TOPIC APPLIES TO:yesSQL Server (starting with 2008)yesAzure SQL DatabaseyesAzure SQL Data Warehouse yesParallel Data Warehouse

Contains a row for each partition of all the tables and most types of indexes in the database. Special index types such as Full-Text, Spatial, and XML are not included in this view. All tables and indexes in SQL Server contain at least one partition, whether or not they are explicitly partitioned.

Column name Data type Description
partition_id bigint Indicates the partition ID. Is unique within a database.
object_id int Indicates the ID of the object to which this partition belongs. Every table or view is composed of at least one partition.
index_id int Indicates the ID of the index within the object to which this partition belongs.

0 = heap
1 = clustered index
2 or greater = nonclustered index
partition_number int Is a 1-based partition number within the owning index or heap. For non-partitioned tables and indexes, the value of this column is 1.
hobt_id bigint Indicates the ID of the data heap or B-tree that contains the rows for this partition.
rows bigint Indicates the approximate number of rows in this partition.
filestream_filegroup_id smallint Applies to: SQL Server 2012 through SQL Server 2017.

Indicates the ID of the FILESTREAM filegroup stored on this partition.
data_compression tinyint Indicates the state of compression for each partition:

0 = NONE
1 = ROW
2 = PAGE
3 = COLUMNSTORE : Applies to: SQL Server 2012 through SQL Server 2017
4 = COLUMNSTORE_ARCHIVE : Applies to: SQL Server 2014 through SQL Server 2017

Note: Full text indexes will be compressed in any edition of SQL Server.
data_compression_desc nvarchar(60) Indicates the state of compression for each partition. Possible values for rowstore tables are NONE, ROW, and PAGE. Possible values for columnstore tables are COLUMNSTORE and COLUMNSTORE_ARCHIVE.

Permissions

Requires membership in the public role. For more information, see Metadata Visibility Configuration.

See Also

Object Catalog Views (Transact-SQL)
Catalog Views (Transact-SQL)
Querying the SQL Server System Catalog FAQ