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sys.dm_db_objects_impacted_on_version_change (Azure SQL Database)

  • Artikkeli

Applies to: Azure SQL Database Azure SQL Managed Instance

This database-scoped system view is designed to provide an early warning system to determine objects that will be impacted by a major release upgrade in Azure SQL Database. You can use the view either before or after the upgrade to get a full enumeration of impacted objects. You will need to query this view in each database to get a full accounting across the entire server.

Column name Data Type Description
class int NOT NULL The class of the object which will be impacted:

1 = constraint

7 = Indexes and heaps
class_desc nvarchar(60) NOT NULL Description of the class:

OBJECT_OR_COLUMN

INDEX
major_id int NOT NULL object id of the constraint, or object id of table that contains index or heap.
minor_id int NULL NULL for constraints

Index_id for indexes and heaps
dependency nvarchar(60) NOT NULL Description of dependency that is causing a constraint or index to be impacted. The same value is also used for warnings generated during upgrade.

Examples:

space (for intrinsic)

geometry (for system UDT)

geography::Parse (for system UDT method)

Permissions

Requires the VIEW DATABASE STATE permission.

Example

The following example shows a query on sys.dm_db_objects_impacted_on_version_change to find the objects impacted by an upgrade to the next major server version

SELECT * FROM sys.dm_db_objects_disabled_on_version_change;  
GO  

class  class_desc        major_id    minor_id    dependency                       
------ ----------------- ----------- ----------- ----------   
1      OBJECT_OR_COLUMN  181575685   NULL        geometry                        
7      INDEX             37575172    1           geometry                        
7      INDEX             2121058592  1           geometry                        
1      OBJECT_OR_COLUMN  101575400   NULL        geometry

Remarks

How to Update Impacted Objects

The following ordered steps describe the corrective action to take after the upcoming June service release upgrade.

Order Impacted Object Corrective Action
1 Indexes Rebuild any index identified by sys.dm_db_objects_impacted_on_version_change For example: ALTER INDEX ALL ON <table> REBUILD
or
ALTER TABLE <table> REBUILD
2 Object All constraints identified by sys.dm_db_objects_impacted_on_version_change must be revalidated after the geometry and geography data in the underlying table is recomputed. For constraints, revalidate using ALTER TABLE.
For example:
ALTER TABLE <tab> WITH CHECK CHECK CONSTRAINT <constraint name>
or
ALTER TABLE <tab> WITH CHECK CONSTRAINT ALL