aarroyoc / pgprolog

PostgreSQL Prolog language handler

Prolog language for PostgreSQL

This is a PostgreSQL extension that allows writing stored procedures in Prolog.

This embeds Scryer Prolog into a PostgreSQL extension.

Proof of concept! Not ready for any actual use.

Running

Run with cargo pgrx run.

Then you can create the extension and language:

CREATE EXTENSION pgprolog;
CREATE LANGUAGE plprolog HANDLER plprolog_call_handler;
CREATE FUNCTION myfunc(a TEXT) RETURNS TEXT AS 'parent(alice,bob). handle(In,Out) :- parent(In,Out).' LANGUAGE plprolog;
SELECT myfunc('alice');