Filtered Statistics in SQL Server

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In SQL Server, Filtered Statistics can improve cardinality estimation, i.e. when joining lookup table, or while joining fact table and dimension table. For this reason, SQL Server supports the creation of up to 30,000 statistics on non-indexed columns. Better estimation with filtered statistics can lead to faster query execution against star schema based data warehouses, in many cases by estimating the optimal join strategy, amount of memory and executing the query in parallel.

The below video demonstrates this with hands-on example. SQLTest Tool simulates the hands-on labs for you, no registration necessary. You can practice the online hands-on example while watching the Video.


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