Chapter 12. Database Indexing
In this chapter, we will cover the following recipes:
- Measuring query and index block statistics
 - Index lookups
 - Comparing indexed scans and sequential scans
 - Clustering against an index
 - Concurrent indexes
 - Combined indexes
 - Partial indexes
 - Finding unused indexes
 - Forcing a query to use an index
 - Detecting missing indexes
 - Concurrent indexes