SQL Server 统计信息相关的命令

USE AdventureWorks2008R2;
GO
DBCC SHOW_STATISTICS ("Person.Address", AK_Address_rowguid);
DBCC SHOW_STATISTICS ("Person.Address", AK_Address_rowguid) WITH HISTOGRAM;
GO

USE AdventureWorks2008R2;
GO
SELECT name AS stats_name, 
    STATS_DATE(object_id, stats_id) AS statistics_update_date
FROM sys.stats 
WHERE object_id = OBJECT_ID(‘Person.Address‘);
GO

USE AdventureWorks2012;
GO
--显示 Product 表的所有统计信息的状态
EXEC sp_autostats ‘Production.Product‘;
--启用Product 表上的所有统计AUTO_UPDATE_STATISTICS 选项
EXEC sp_autostats ‘Production.Product‘, ‘ON‘;
--Product 表上的 AK_Product_Name 索引禁用 AUTO_UPDATE_STATISTICS 选项。
EXEC sp_autostats ‘Production.Product‘, ‘OFF‘, AK_Product_Name;

GO

USE AdventureWorks2012;
GO
--更新库所有表的统计信息
EXEC sp_updatestats
go
--更新某一个表的统计信息
UPDATE STATISTICS Sales.SalesOrderDetail;
GO
--更新某一个索引的统计信息
UPDATE STATISTICS Sales.SalesOrderDetail AK_SalesOrderDetail_rowguid;

SELECT  CASE WHEN DATABASEPROPERTYEX(‘DBMonitor‘, ‘IsAutoCreateStatistics‘) = 1
             THEN ‘Yes‘
             ELSE ‘No‘
        END AS ‘IsAutoCreateStatistics‘ ,
        CASE WHEN DATABASEPROPERTYEX(‘DBMonitor‘, ‘IsAutoUpdateStatistics‘) = 1
             THEN ‘Yes‘
             ELSE ‘No‘
        END AS ‘IsAutoUpdateStatistics‘ ,
        CASE WHEN DATABASEPROPERTYEX(‘DBMonitor‘, ‘Is_Auto_Update_stats_async_on‘) = 1
             THEN ‘Yes‘
             ELSE ‘No‘
        END AS ‘IsAutoUpdateStatsaAyncOn‘
 
GO
SELECT  name ,
        is_auto_create_stats_on ,
        is_auto_update_stats_async_on ,
        is_auto_close_on
FROM    sys.databases ;