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Extension descriptor (YAML)

Extension that adds support for SQL/PGQ and graph algorithms

Compatibility Matrix

This table covers all DuckDB releases that have not reached end-of-life, including LTS releases, and shows the 2 most recent patch releases of each. Older patch releases are not listed, but the extension may be available for them as well.

Installing and Loading

INSTALL duckpgq FROM community;
LOAD duckpgq;

Example

SET active_grammar_extensions = ['duckpgq'];

CREATE TABLE Person AS SELECT * FROM 'https://gist.githubusercontent.com/Dtenwolde/2b02aebbed3c9638a06fda8ee0088a36/raw/8c4dc551f7344b12eaff2d1438c9da08649d00ec/person-sf0.003.csv';
CREATE TABLE Person_knows_person AS SELECT * FROM 'https://gist.githubusercontent.com/Dtenwolde/81c32c9002d4059c2c3073dbca155275/raw/8b440e810a48dcaa08c07086e493ec0e2ec6b3cb/person_knows_person-sf0.003.csv';

CREATE PROPERTY GRAPH snb
  VERTEX TABLES (
    Person
  )
  EDGE TABLES (
    Person_knows_person SOURCE KEY (Person1Id) REFERENCES Person (id)
                        DESTINATION KEY (Person2Id) REFERENCES Person (id)
    LABEL knows
  );

FROM GRAPH_TABLE (snb
  MATCH (a:Person)-[k:knows]->(b:Person)
  COLUMNS (a.id, b.id)
)
LIMIT 1;

FROM GRAPH_TABLE (snb 
  MATCH p = ANY SHORTEST (a:person)-[k:knows]->{1,3}(b:Person) 
  COLUMNS (a.id, b.id, path_length(p))
) 
LIMIT 1;

FROM local_clustering_coefficient(snb, person, knows);

DROP PROPERTY GRAPH snb;

About duckpgq

The DuckPGQ extension supports the SQL/PGQ syntax as part of the official SQL:2023 standard developed by ISO.

It introduces visual graph pattern matching and a more concise syntax for path-finding. For more information, please see the DuckPGQ documentation. Note: Starting with DuckDB v2.0, you have to opt in to the DuckPGQ grammar after loading the extension by running SET active_grammar_extensions = ['duckpgq'];. Disclaimer: As this extension is part of an ongoing research project by the Database Architectures group at CWI, some features may still be under development. We appreciate your understanding and patience as we continue to improve it.

Added Functions

Overloaded Functions

This extension does not add any function overloads.

Added Types

This extension does not add any types.

Added Settings