The pg_trgm module provides functions and operators for determining the similarity of alphanumeric text based on trigram matching, as well as

The lo module provides support for managing Large Objects (also called LOs or BLOBs). This includes a data type lo and

btree_gist provides GiST index operator classes that implement B-tree equivalent behavior for the data types int2,

The pg_freespacemap module provides a means for examining the free space map (FSM). It provides a function called pg_freespace

btree_gin provides sample GIN operator classes that implement B-tree equivalent behavior for the data types int2,

The pageinspect module provides functions that allow you to inspect the contents of database pages at a low level, which is useful for debugging

adminpack provides a number of support functions which pgAdmin and other administration and management tools

The isn module provides data types for the following international product numbering standards: EAN13, UPC, ISBN (books), ISMN (music), and ISSN

The spi module provides several workable examples of using SPI and triggers. While these functions are of some value in their own right, they

This module implements a data type ltree for representing labels of data stored in a hierarchical tree-like structure. Extensive facilities for searching