Recently we have seen a negative performance for a query that is running against a 500GB size of database, where AUTO UPDATE STATISTICS is enabled and we perform weekly reindexing on this database. In addition to this I perform intermittent update statistics against set of tables that has frequently update/deletes. As usual I have checked for ...

UPDATE STATISTICS is very helpful to get the performance by updating the distribution of key values for one or more statistics groups or set of collections in the specified table or indexed view. So how this is handled within the SQL Server, you may be aware that SQL 2000 version uses a counter (rowmodctr) to track row modification and within SQL ...