sys.dm_fts_semantic_similarity_population (Transact-SQL)

Applies to: SQL Server

Returns one row of status information about the population of the document similarity index for each similarity index in each table that has an associated semantic index.

The population step follows the extraction step. For status information about the similarity extraction step, see sys.dm_fts_index_population (Transact-SQL).

Column name Type Description
database_id int ID of the database that contains the full-text index being populated.
catalog_id int ID of the full-text catalog that contains this full-text index.
table_id int ID of the table for which the full-text index is being populated.
document_count int Number of total documents in the population
document_processed_count int Number of documents processed since start of this population cycle
completion_type int Status of how this population completed.
completion_type_description nvarchar(120) Description of the completion type.
worker_count int Number of worker threads associated with similarity extraction
status int Status of this Population. Note: some of the states are transient. One of the following:

3 = Starting

5 = Processing normally

7 = Has stopped processing

11 = Population aborted
status_description nvarchar(120) Description of status of the population.
start_time datetime Time that the population started.
incremental_timestamp timestamp Represents the starting timestamp for a full population. For all other population types this value is the last committed checkpoint representing the progress of the populations.

General Remarks

For more information, see Manage and Monitor Semantic Search.


For more information about the status of semantic indexing, query sys.dm_fts_index_population (Transact-SQL).



Requires VIEW SERVER STATE permission on the server.

Permissions for SQL Server 2022 and later

Requires VIEW SERVER PERFORMANCE STATE permission on the server.


The following example shows how to query the status of document similarity index populations for all tables that have an associated semantic index:

SELECT * FROM sys.dm_fts_semantic_similarity_population;  

See also

Manage and Monitor Semantic Search