3rd October 2019: PostgreSQL 12 Released!
Supported Versions: Current (12) / 11 / 10 / 9.6 / 9.5 / 9.4
Development Versions: devel
Unsupported versions: 9.3 / 9.2
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You may want to view the same page for the current version, or one of the supported versions listed above instead.

Chapter 54. SP-GiST Indexes