©
Dieses Dokument verwendet PHP-Handbuch für chinesische Websites Freigeben
The PostgreSQL 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:
B-tree equivalent functionality for several data types
Indexing for multidimensional cubes
Module for storing (key, value) pairs
RD-Tree for one-dimensional array of int4 values
Indexing for tree-like structures
Text similarity using trigram matching
Indexing for "float ranges"