Modify Statistic Document For Free

Sampling rate of SP_Updatestats is very low like 0.05%. Especially on VLDB's It is advisable to use DBCC Update statistics on each table to update stats with appropriate sampling. Best would be to perform DBCC update statistics with Full scan. If this is not possible, use sampling rate of 25%.

Statistics store information about the data distribution of the column value(s) in your tables as well as the total number of rows. For indexes it stores the distribution of key values.

To modify data involves changing the contents of tables. Modify data in your database. Delete rows. Insert rows. Update rows. Privileges on a database and on its objects. Data integrity. Interrupted modifications. Backups and logs with IBM Informix database servers.

Sp_updatestats runs UPDATE STATISTICS command for whole user-defined and internal tables in the current database so that the statistics will be up-to-date. The following shows the syntax of this procedure. With the help of the following query, we can update all tables statistics in the Adventureworks database.

To update a statistics object In Object Explorer, click the plus sign to expand the database in which you want to update the statistic. Click the plus sign to expand the Tables folder. Click the plus sign to expand the table in which you want to update the statistic. Click the plus sign to expand the Statistics folder.

Sp_updatestats executes UPDATE STATISTICS , by specifying the ALL keyword, on all user-defined and internal tables in the database. sp_updatestats displays messages that indicate its progress. When the update is completed, it reports that statistics have been updated for all tables.

If you want to stop auto-update for any particular statistics you can simply do that by running the following syntax. UPDATE STATISTICS SchemaName. TableName WITH FULLSCAN, NORECOMPUTE; The above syntax will fully update statistics and also will disable the future statistics update by auto-update statistics.