sys.dm_pdw_nodes_database_encryption_keys (Transact-SQL)

Artikkeli
03/03/2023

Applies to: Azure Synapse Analytics Analytics Platform System (PDW)

Returns information about the encryption state of a database and its associated database encryption keys. sys.dm_pdw_nodes_database_encryption_keys provides this information for each node. For more information about database encryption, see Transparent Data Encryption (SQL Server PDW).

Note

This syntax is not supported by serverless SQL pool in Azure Synapse Analytics.

Column Name	Data Type	Description
database_id	int	ID of the physical database on each node.
encryption_state	int	Indicates whether the database on this node is encrypted or not encrypted. 0 = No database encryption key present, no encryption 1 = Unencrypted 2 = Encryption in progress 3 = Encrypted 4 = Key change in progress 5 = Decryption in progress 6 = Protection change in progress (The certificate that is encrypting the database encryption key is being changed.)
create_date	datetime	Displays the date the encryption key was created.
regenerate_date	datetime	Displays the date the encryption key was regenerated.
modify_date	datetime	Displays the date the encryption key was modified.
set_date	datetime	Displays the date the encryption key was applied to the database.
opened_date	datetime	Shows when the database key was last opened.
key_algorithm	varchar(?)	Displays the algorithm that is used for the key.
key_length	int	Displays the length of the key.
encryptor_thumbprint	varbin	Shows the thumbprint of the encryptor.
percent_complete	real	Percent complete of the database encryption state change. This will be 0 if there is no state change.
node_id	int	Unique numeric ID associated with the node.

Permissions

Requires the VIEW SERVER STATE permission on the server.

Examples

The following example joins sys.dm_pdw_nodes_database_encryption_keys to other system tables to indicate the encryption state for each node of the TDE protected databases.

Analytics Platform System (PDW)

SELECT D.database_id AS DBIDinMaster, D.name AS UserDatabaseName,   
PD.pdw_node_id AS NodeID, DM.physical_name AS PhysDBName,   
keys.encryption_state  
FROM sys.dm_pdw_nodes_database_encryption_keys AS keys  
JOIN sys.pdw_nodes_pdw_physical_databases AS PD  
    ON keys.database_id = PD.database_id AND keys.pdw_node_id = PD.pdw_node_id  
JOIN sys.pdw_database_mappings AS DM  
    ON DM.physical_name = PD.physical_name  
JOIN sys.databases AS D  
    ON D.database_id = DM.database_id  
ORDER BY D.database_id, PD.pdw_node_ID;

Azure Synapse Analytics

--Query provides underlying distribution encryption status
SELECT keys.database_id AS DBIDinPhysicalDatabases,   
PD.pdw_node_id AS NodeID, PD.physical_name AS PhysDBName,   
keys.encryption_state  
FROM sys.dm_pdw_nodes_database_encryption_keys AS keys  
JOIN sys.pdw_nodes_pdw_physical_databases AS PD  
    ON keys.database_id = PD.database_id AND keys.pdw_node_id = PD.pdw_node_id  
ORDER BY keys.database_id, PD.pdw_node_ID;

--Query provides the DW encryption status
SELECT D.database_id AS DBIDinMaster, D.name AS UserDatabaseName,   
PD.pdw_node_id AS NodeID, PD.physical_name AS PhysDBName,   
keys.encryption_state  
FROM sys.dm_pdw_nodes_database_encryption_keys AS keys  
JOIN sys.pdw_nodes_pdw_physical_databases AS PD  
    ON keys.database_id = PD.database_id AND keys.pdw_node_id = PD.pdw_node_id  
JOIN sys.databases AS D  
    ON D.database_id = PD.database_id  
ORDER BY D.database_id, PD.pdw_node_ID;

Jaa

sys.dm_pdw_nodes_database_encryption_keys (Transact-SQL)

Permissions

Examples

See Also

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