Auto Indexing Wrap-Up . Automatic Indexing . Exams of Oracle . Index Case Summary . The Clustering Factor
Indexing Only Some of the Rows-Indexes
On 24/01/2022 by Robert CorvinoIn addition to transparently helping out queries that use built-in functions like UPPER, LOWER, and so on, function-based indexes can be used to selectively index only some of the rows in a table. As we’ll discuss a little later, B*Tree indexes do not contain entries for entirely NULL keys. That is, if you have an
