Updating statistics sql 2016 r2

12-Sep-2017 05:10

For samples statistics, only the sampled rows are imported.

If you have a large external table, it will be much faster to use the default sampling instead of the full scan option.

Try as I might, I find it hard to over-emphasize the importance of statistics to SQL Server.

Bad or missing statistics leads to poor choices by the optimizer: The result is horrific performance.

You can specify any column that can be specified as an index key column with the following exceptions: For more information about the AUTO_STATISTICS_UPDATE option, see ALTER DATABASE SET Options (Transact-SQL).

For more information about disabling and re-enabling statistics updates, see Statistics. If per partition statistics are not supported an error is generated.

[cc lang=”sql”] EXEC sp_updatestats [/cc] The other way, is to use the UPDATE STATISTICS command.

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Grant Fritchey answers the 18 most frequently-asked questions about SQL Server Statistics: the ones we somehow feel silly asking in public, and think twice about doing so.This command gives much better granularity of control: [cc lang=”sql”] — Update all statistics on a table UPDATE STATISTICS Sales.