postgresql-17-similarity

PostgreSQL similarity functions extension

Description

pg_similarity is an extension to support similarity queries on PostgreSQL. The extension consists of:

* Functions implementing similarity algorithms available in the literature.

These functions can be used as UDFs and are the base for implementing

the similarity operators;

* Operators defined on top of the similarity functions. They use similarity

functions to obtain the similarity threshold and compare its value to a

user-defined threshold to decide if it is a match or not;

* Session variables storing similarity function parameters.

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