Because the actual data is also stored in the clustered index, the correct analogy for this type of index is the book’s table of contents plus the pages themselves i.e. the whole book. So the ...

The most important performance-tuning technique available is having the needed indexes created on the tables to ensure that the SQL Server database engine is able to get the data that it needs to as ...

Analyzing the data, I soon realized the real reason was the LACK of data. This table had only 504 rows and only consumed 13 data pages in the clustered index. The non-clustered indexes used only 2 or ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Jinsong Yu shares deep architectural insights ...

One of the most common problems when running SQL Servers is slow queries. The help desk or database team usually hears that described as the application is slow or ...