The LightDB source distribution includes
several examples of index methods implemented using
GiST. The core system currently provides text search
support (indexing for tsvector
and tsquery
) as well as
R-Tree equivalent functionality for some of the built-in geometric data types
(see src/backend/access/gist/gistproc.c
). The following
contrib
modules also contain GiST
operator classes:
btree_gist
B-tree equivalent functionality for several data types
ltree
Indexing for tree-like structures