erika31 / mysql_fdw Goto Github PK
View Code? Open in Web Editor NEWThis project forked from enterprisedb/mysql_fdw
An experimental PostgreSQL foreign data wrapper for MySQL
This project forked from enterprisedb/mysql_fdw
An experimental PostgreSQL foreign data wrapper for MySQL
MySQL FDW for PostgreSQL 9.1+ ============================== This PostgreSQL extension implements a Foreign Data Wrapper (FDW) for the MySQL. This code is experimental, and largely intended as a pet project for me to experiment with and learn about FDWs in PostgreSQL. By all means use it, but do so entirely at your own risk! You have been warned! Building -------- Install MySQL, or just the C client library, and Once that's done, the extension can be built with: PATH=/usr/local/pgsql/bin/:/usr/local/mysql/bin:$PATH make USE_PGXS=1 sudo PATH=/usr/local/pgsql/bin/:/usr/local/mysql/bin:$PATH make USE_PGXS=1 install (assuming you have PostgreSQL 9.1 in /usr/local/pgsql and MySQL in /usr/local/mysql). I've tested on Mac OS X 10.7 only, but other *nix's should also work. I haven't tested on Windows, but the code should be good on MinGW. Limitations ----------- - No attempt is made to pushdown quals to MySQL. - The MySQL connection used to plan queries isn't currently reused during execution. Usage ----- The following parameters can be set on a MySQL foreign server: address: The address or hostname of the MySQL server. Default: 127.0.0.1 port: The port number on which the MySQL server is listening. Default: 3306 The following parameter can be set on a MySQL foreign table: database: The name of the MySQL database to query. Default: NULL query: An SQL query to define the data set on the MySQL server. table: The name of a table (quoted and qualified as required) on the MySQL table. Note that the query and table paramters are mutually exclusive. Using query can provide either a simple way to push down quals (which of course is fixed at definition time), or to base remote tables on more complex SQL queries. The following parameter can be set on a user mapping for a MySQL foreign server: username: The username to use when connecting to MySQL Default <none> password: The password to authenticate to the MySQL server with. Default: <none> Example ------- -- Install the extension CREATE EXTENSION mysql_fdw; -- Create the foreign server, a pointer to the MySQL server. CREATE SERVER mysql_svr FOREIGN DATA WRAPPER mysql_fdw OPTIONS (address '127.0.0.1', port '3306'); -- Create one or more foreign tables on the MySQL server. The first of -- these maps to a remote table, whilst the second uses an SQL query. CREATE FOREIGN TABLE employees ( id integer, name text, address text) SERVER mysql_svr OPTIONS (table 'hr.employees'); CREATE FOREIGN TABLE overtime_2010 ( id integer, employee_id integer, hours integer) SERVER mysql_svr OPTIONS (query 'SELECT id, employee_id, hours FROM hr.overtime WHERE year = 2010;'); -- Create a user mapping to tell the FDW the username/password to -- use to connect to MySQL, for PUBLIC. This could be done on a per- -- role basis. CREATE USER MAPPING FOR PUBLIC SERVER mysql_svr OPTIONS (username 'dpage', password ''); -- Dave Page [email protected]
A declarative, efficient, and flexible JavaScript library for building user interfaces.
๐ Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. ๐๐๐
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google โค๏ธ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.