duckdb_fdw

pig build get duckdb_fdw; # get duckdb_fdw source code
pig build dep duckdb_fdw; # install build dependencies
pig build pkg duckdb_fdw; # build extension rpm or deb
pig build ext duckdb_fdw; # build extension rpms

pig repo add pgsql -u   # add PGDG + Pigsty repo and update cache (leave existing repos)

pig ext install duckdb_fdw; # install by extension name, for the current active PG version
pig ext install duckdb_fdw; # install via package alias, for the active PG version
pig ext install duckdb_fdw -v 17;   # install for PG 17
pig ext install duckdb_fdw -v 16;   # install for PG 16
pig ext install duckdb_fdw -v 15;   # install for PG 15
pig ext install duckdb_fdw -v 14;   # install for PG 14
pig ext install duckdb_fdw -v 13;   # install for PG 13

CREATE EXTENSION duckdb_fdw;

-- create extension
CREATE EXTENSION duckdb_fdw;

-- create duckdb_fdw server
CREATE SERVER duckdb_server FOREIGN DATA WRAPPER duckdb_fdw OPTIONS (database '/tmp/duck.db');

-- create user mapping [OPTIONAL]
-- GRANT USAGE ON FOREIGN SERVER duckdb_server TO PUBLIC;

SELECT duckdb_fdw_version();

-- You can execute duckdb command with `duckdb_execute`, for example, to create a table inside duckdb:
-- create a table in duckdb
SELECT duckdb_execute('duckdb_server', 'CREATE TABLE t1 (a integer,b varchar);');

-- create duckdb foreign table mapping that duckdb table
CREATE FOREIGN TABLE t1 (
    a integer,
    b text
) SERVER duckdb_server OPTIONS (
    table 't1'
);

-- write some data and read it back
INSERT INTO t1 SELECT i AS a,i::text AS b FROM generate_series(1,10) i;
SELECT * FROM t1;

duckdb /tmp/duck.db

CREATE TABLE t1 (
  a integer,
  b text
);
  
INSERT INTO t1 VALUES (1, 'a'), (2 , 'b'), (3, 'c');
SELECT * FROM t1;

IMPORT FOREIGN SCHEMA public FROM SERVER duckdb_server INTO public;