npm install pg
Connect to a postgres instance, run a query, and disconnect.
var pg = require'pg';//or native libpq bindings//var pg = require('pg').nativevar conString = "postgres://postgres:1234@localhost/postgres";var client = conString;clientconnectiferrreturn console.error'could not connect to postgres' err;clientquery'SELECT NOW() AS "theTime"'iferrreturn console.error'error running query' err;console.logresultrows0theTime;//output: Tue Jan 15 2013 19:12:47 GMT-600 (CST)clientend;;;
Typically you will access the PostgreSQL server through a pool of clients. node-postgres ships with a built in pool to help get you up and running quickly.
var pg = require'pg';var conString = "postgres://postgres:1234@localhost/postgres";pgconnectconStringiferrreturn console.error'error fetching client from pool' err;clientquery'SELECT $1::int AS numbor' '1'//call `done()` to release the client back to the pooldone;iferrreturn console.error'error running query' err;console.logresultrows0numbor;//output: 1;;
Documentation is a work in progress primarily taking place on the github WIKI
To use native libpq bindings replace
The two share the same interface so no other code changes should be required. If you find yourself having to change code other than the require statement when switching from
pg.native, please report an issue.
- optional connection pooling
- extensible js<->postgresql data-type coercion
- supported PostgreSQL features
- parameterized queries
- named statements with query plan caching
- async notifications with
- bulk import & export with
COPY TO/COPY FROM
I love contributions.
You are welcome contribute via pull requests. If you need help getting the tests running locally feel free to email me or gchat me.
I will happily accept your pull request if it:
- has tests
- looks reasonable
- does not break backwards compatibility
- satisfies jshint
Information about the testing processes is in the wiki.
If you need help or have questions about constructing a pull request I'll be glad to help out as well.
If at all possible when you open an issue please provide
- version of node
- version of postgres
- smallest possible snippet of code to reproduce the problem
Usually I'll pop the code into the repo as a test. Hopefully the test fails. Then I make the test pass. Then everyone's happy!
If you need help or run into any issues getting node-postgres to work on your system please report a bug or contact me directly. I am usually available via google-talk at my github account public email address.
I usually tweet about any important status updates or changes to node-postgres.
Follow me @briancarlson to keep up to date.
node-postgres is by design low level with the bare minimum of abstraction. These might help out:
If you use node-postgres in production and would like your site listed here, fork & add it.
Copyright (c) 2010 Brian Carlson (firstname.lastname@example.org)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.