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Re:Things to know about databases by funcDropShadow on Monday June 27, 2022 @06:31PM (#31901740)
> so older databases like PostgreSQL will be using B+trees for the indefinite future even if suboptimal.

PostgreSQL 14 comes with 6 builtin index types[1]: B-tree, Gist, SP-Gist, Gin, Brin, and Hash. More can be plugged in as extensions.

[1]: Chapters 63-69 of https://www.postgresql.org/docs/14/internals.html

Edited: Fixed the link to version 14.

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