Updating date in sql
Starting with SQL Server 2016, sampling of data to build statistics is done in parallel, when using compatibility level 130, to improve the performance of statistics collection.The query optimizer will use parallel sample statistics, whenever a table size exceeds a certain threshold. When neither SAMPLE nor FULLSCAN is specified, the query optimizer uses sampled data and computes the sample size by default.
Corrected Code select object_name(object_id, db_id(‘your database name’)) as Table Name, last_user_update from sys.dm_db_index_usage_stats where database_id = DB_ID( ‘your database name’) and object_id=(select object_id from your database objects where name like ‘your table name’)This will give last data on which table accessed by uses.select DISTINCT DB_NAME(database_id)AS ‘DATABASENAME’,object_name(object_id) AS ‘OBJECT_NAME’ , MAX(COALESCE(last_user_lookup , last_user_scan , last_user_seek , last_user_update )) [Last time Table Accessed] from sys.dm_db_index_usage_stats where database_id =10 —- CHANGE DB_ID NUMBER HERE and (last_user_lookup IS NOT NULL OR last_user_scan IS NOT NULL OR last_user_seek IS NOT NULL OR last_user_update IS NOT NULL) GROUP BY DB_NAME(database_id) , object_name(object_id)Thank you, that help me generate a query to find which databases to backup every night!
A lot of the tables in my environment get updated through applications, and we are in the process of doing an inventory on old junk tables/records. SELECT DB_NAME(index Stats.database_id) as database Name , OBJECT_NAME(index Stats.”object_id”, index Stats.database_id) as object Name , sum(index Stats.user_seeks ) as user_seeks , sum(index Stats.user_scans ) as user_scans , sum(index Stats.user_lookups ) as user_lookups , sum(index Stats.user_updates ) as user_updates , max(index Stats.last_user_seek ) as last_user_seek , max(index Stats.last_user_scan ) as last_user_scan , max(index Stats.last_user_lookup) as last_user_lookup , max(index Stats.last_user_update) as last_user_update , sum(index Stats.system_seeks ) as system_seeks , sum(index Stats.system_scans ) as system_scans , sum(index Stats.system_lookups ) as system_lookups , sum(index Stats.system_updates ) as system_updates , max(index Stats.last_system_seek ) as last_system_seek , max(index Stats.last_system_scan ) as last_system_scan , max(index Stats.last_system_lookup) as last_system_lookup , max(index Stats.last_system_update) as last_system_update FROM sys.dm_db_index_usage_stats as index Stats group by index Stats.database_id , index Stats.”object_id” order by index Stats.database_id , index Stats.”object_id” ; Dear Sir, I am developing a web application , and need to write a sql query demo satisfy 3nf any change in master table should reflect in all other table where ever that common id shares integrated with PHP and mysql.
I need to know the relevance of new updates/inserts in these tables in order to deem them junk or still relevant. Thank youhow can i find out all changes made to my specific table. It would be really helpful if you give me some example that explains clearly.
For more information about AUTO_CREATE_STATISTICS, see ALTER DATABASE SET Options (Transact-SQL).
To view all indexes for a table or view, you can use sp_helpindex.
We recommend against specifying 0 PERCENT or 0 ROWS.