## Chapter 66. SP-GiST Indexes

**Table of Contents**

[66.1. Introduction](spgist-intro.html)

[66.2. Built-in Operator Classes](spgist-builtin-opclasses.html)

[66.3. Extensibility](spgist-extensibility.html)

[66.4. Implementation](spgist-implementation.html)

[66.4.1. SP-GiST Limits](spgist-implementation.html#SPGIST-LIMITS)

[66.4.2. SP-GiST Without Node Labels](spgist-implementation.html#SPGIST-NULL-LABELS)

[66.4.3. “All-the-Same” Inner Tuples](spgist-implementation.html#SPGIST-ALL-THE-SAME)

[66.5. Examples](spgist-examples.html)

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