duckdb_fdw
DuckDB 外部数据源包装器
Module:
Categories:
扩展总览
PIGSTY 第三方扩展: duckdb_fdw
: DuckDB 外部数据源包装器
基本信息
- 扩展编号: 2450
- 扩展名称:
duckdb_fdw
- 标准包名:
duckdb_fdw
- 扩展类目:
OLAP
- 开源协议: MIT
- 官方网站: https://github.com/alitrack/duckdb_fdw
- 编程语言: C
- 其他标签:
duckdb
- 备注信息:
元数据
- 默认版本: 1.1.2
- PG大版本:
17
,16
,15
,14
,13
- 动态加载: 无需动态加载
- 需要DDL: 需要执行
CREATE EXTENSION
DDL - 可重定位: 无法安装至任意模式下
- 信任程度: 未受信任,创建扩展需要超级用户权限
- 所需模式: 无
- 所需扩展: 无
软件包
- RPM仓库:PIGSTY
- RPM包名:
duckdb_fdw_$v*
- RPM版本:
1.0.0
- RPM依赖:
libduckdb
- DEB仓库:PIGSTY
- DEB包名:
postgresql-$v-duckdb-fdw
- DEB版本:
1.0.0
- DEB依赖:
libduckdb
最新版本
扩展安装
使用 pig
命令行工具安装 duckdb_fdw
扩展:
pig ext install duckdb_fdw
使用 Pigsty剧本 安装 duckdb_fdw 扩展:
./pgsql.yml -t pg_extension -e '{"pg_extensions": ["duckdb_fdw"]}' # -l <集群名>
从 YUM仓库 手工安装 duckdb_fdw
RPM 包:
dnf install duckdb_fdw_17*;
dnf install duckdb_fdw_16*;
dnf install duckdb_fdw_15*;
dnf install duckdb_fdw_14*;
dnf install duckdb_fdw_13*;
从 APT仓库 手工安装 duckdb_fdw
DEB 包:
apt install postgresql-17-duckdb-fdw;
apt install postgresql-16-duckdb-fdw;
apt install postgresql-15-duckdb-fdw;
apt install postgresql-14-duckdb-fdw;
apt install postgresql-13-duckdb-fdw;
使用以下 SQL 命令在已经安装此扩展插件的 PG 集群上 启用 duckdb_fdw
扩展:
CREATE EXTENSION duckdb_fdw;
使用方法
Create Extension
After install the duckdb_fdw
yum package, you can create the extension inside PostgreSQL database:
-- 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;
You can also import foreign schema from duckdb server, for example, create a table with duckdb cli:
duckdb /tmp/duck.db
CREATE TABLE t1 (
a integer,
b text
);
INSERT INTO t1 VALUES (1, 'a'), (2 , 'b'), (3, 'c');
SELECT * FROM t1;
Then import the schema into PostgreSQL:
IMPORT FOREIGN SCHEMA public FROM SERVER duckdb_server INTO public;