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pgcli

by dbcli

dbcli /pgcli

Postgres CLI with autocompletion and syntax highlighting

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A REPL for Postgres

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This is a postgres client that does auto-completion and syntax highlighting.

Home Page: http://pgcli.com

MySQL Equivalent: http://mycli.net

.. image:: screenshots/pgcli.gif .. image:: screenshots/image01.png

Quick Start

If you already know how to install python packages, then you can simply do:

::

$ pip install -U pgcli or $ sudo apt-get install pgcli # Only on Debian based Linux (e.g. Ubuntu, Mint, etc) $ brew install pgcli # Only on macOS

If you don't know how to install python packages, please check the

detailed instructions

_.

If you are restricted to using psycopg2 2.7.x then pip will try to install it from a binary. There are some known issues with the psycopg2 2.7 binary - see the

psycopg docs

_ for more information about this and how to force installation from source. psycopg2 2.8 has fixed these problems, and will build from source.

.. _

detailed instructions

: https://github.com/dbcli/pgcli#detailed-installation-instructions .. _

psycopg docs

: http://initd.org/psycopg/docs/install.html#change-in-binary-packages-between-psycopg-2-7-and-2-8

Usage

::

$ pgcli [database\_name] or $ pgcli postgresql://[user[:password]@][netloc][:port][/dbname][?extra=value[&other=other-value]]

Examples:

::

$ pgcli local\_database $ pgcli postgres://amjith:[email protected]:5432/app\_db?sslmode=verify-ca&sslrootcert=/myrootcert

For more details:

::

$ pgcli --help Usage: pgcli [OPTIONS] [DBNAME] [USERNAME] Options: -h, --host TEXT Host address of the postgres database. -p, --port INTEGER Port number at which the postgres instance is listening. -U, --username TEXT Username to connect to the postgres database. -u, --user TEXT Username to connect to the postgres database. -W, --password Force password prompt. -w, --no-password Never prompt for password. --single-connection Do not use a separate connection for completions. -v, --version Version of pgcli. -d, --dbname TEXT database name to connect to. --pgclirc PATH Location of pgclirc file. -D, --dsn TEXT Use DSN configured into the [alias\_dsn] section of pgclirc file. --list-dsn list of DSN configured into the [alias\_dsn] section of pgclirc file. --row-limit INTEGER Set threshold for row limit prompt. Use 0 to disable prompt. --less-chatty Skip intro on startup and goodbye on exit. --prompt TEXT Prompt format (Default: "\[email protected]\h:\d\> "). --prompt-dsn TEXT Prompt format for connections using DSN aliases (Default: "\[email protected]\h:\d\> "). -l, --list list available databases, then exit. --auto-vertical-output Automatically switch to vertical output mode if the result is wider than the terminal width. --warn / --no-warn Warn before running a destructive query. --help Show this message and exit.
pgcli

also supports many of the same

environment variables

_ as

psql

for login options (e.g.

PGHOST

,

PGPORT

,

PGUSER

,

PGPASSWORD

,

PGDATABASE

).

.. _environment variables: https://www.postgresql.org/docs/current/libpq-envars.html

Features

The

pgcli

is written using prompt_toolkit_.

  • Auto-completes as you type for SQL keywords as well as tables and columns in the database.
  • Syntax highlighting using Pygments.

Smart-completion (enabled by default) will suggest context-sensitive completion.

  • SELECT \* FROM <tab></tab>
    will only show table names.
  • SELECT \* FROM users WHERE <tab></tab>

    will only show column names.

Primitive support for

psql

back-slash commands.

  • Pretty prints tabular data.

.. _prompt_toolkit: https://github.com/jonathanslenders/python-prompt-toolkit .. _tabulate: https://pypi.python.org/pypi/tabulate

Config

A config file is automatically created at

~/.config/pgcli/config

at first launch. See the file itself for a description of all available options.

Contributions:

If you're interested in contributing to this project, first of all I would like to extend my heartfelt gratitude. I've written a small doc to describe how to get this running in a development setup.

https://github.com/dbcli/pgcli/blob/master/DEVELOP.rst

Please feel free to reach out to me if you need help. My email: [email protected], Twitter:

@amjithr <http:></http:>

_

Detailed Installation Instructions:

macOS:

The easiest way to install pgcli is using Homebrew.

::

$ brew install pgcli

Done!

Alternatively, you can install

pgcli

as a python package using a package manager called called

pip

. You will need postgres installed on your system for this to work.

In depth getting started guide for

pip

::

$ which pip

If it is installed then you can do:

::

$ pip install pgcli

If that fails due to permission issues, you might need to run the command with sudo permissions.

::

$ sudo pip install pgcli

If pip is not installed check if easy_install is available on the system.

::

$ which easy\_install $ sudo easy\_install pgcli

Linux:

In depth getting started guide for

pip

Check if pip is already available in your system.

::

$ which pip

If it doesn't exist, use your linux package manager to install

pip

. This might look something like:

::

$ sudo apt-get install python-pip # Debian, Ubuntu, Mint etc or $ sudo yum install python-pip # RHEL, Centos, Fedora etc
pgcli

requires python-dev, libpq-dev and libevent-dev packages. You can install these via your operating system package manager.

::

$ sudo apt-get install python-dev libpq-dev libevent-dev or $ sudo yum install python-devel postgresql-devel

Then you can install pgcli:

::

$ sudo pip install pgcli

Docker

Pgcli can be run from within Docker. This can be useful to try pgcli without installing it, or any dependencies, system-wide.

To build the image:

::

$ docker build -t pgcli .

To create a container from the image:

::

$ docker run --rm -ti pgcli pgcli <args>
</args>

To access postgresql databases listening on localhost, make sure to run the docker in "host net mode". E.g. to access a database called "foo" on the postgresql server running on localhost:5432 (the standard port):

::

$ docker run --rm -ti --net host pgcli pgcli -h localhost foo

To connect to a locally running instance over a unix socket, bind the socket to the docker container:

::

$ docker run --rm -ti -v /var/run/postgres:/var/run/postgres pgcli pgcli foo

IPython

Pgcli can be run from within

IPython <https:></https:>

_ console. When working on a query, it may be useful to drop into a pgcli session without leaving the IPython console, iterate on a query, then quit pgcli to find the query results in your IPython workspace.

Assuming you have IPython installed:

::

$ pip install ipython-sql

After that, run ipython and load the

pgcli.magic

extension:

::

$ ipython In [1]: %load\_ext pgcli.magic

Connect to a database and construct a query:

::

In [2]: %pgcli postgres://[email protected]:5432/world Connected: [email protected] [email protected]:world\> select \* from city c where countrycode = 'USA' and population \> 1000000; +------+--------------+---------------+--------------+--------------+ | id | name | countrycode | district | population | |------+--------------+---------------+--------------+--------------| | 3793 | New York | USA | New York | 8008278 | | 3794 | Los Angeles | USA | California | 3694820 | | 3795 | Chicago | USA | Illinois | 2896016 | | 3796 | Houston | USA | Texas | 1953631 | | 3797 | Philadelphia | USA | Pennsylvania | 1517550 | | 3798 | Phoenix | USA | Arizona | 1321045 | | 3799 | San Diego | USA | California | 1223400 | | 3800 | Dallas | USA | Texas | 1188580 | | 3801 | San Antonio | USA | Texas | 1144646 | +------+--------------+---------------+--------------+--------------+ SELECT 9 Time: 0.003s

Exit out of pgcli session with

Ctrl + D

and find the query results:

::

[email protected]:world\> Goodbye! 9 rows affected. Out[2]: [(3793, u'New York', u'USA', u'New York', 8008278), (3794, u'Los Angeles', u'USA', u'California', 3694820), (3795, u'Chicago', u'USA', u'Illinois', 2896016), (3796, u'Houston', u'USA', u'Texas', 1953631), (3797, u'Philadelphia', u'USA', u'Pennsylvania', 1517550), (3798, u'Phoenix', u'USA', u'Arizona', 1321045), (3799, u'San Diego', u'USA', u'California', 1223400), (3800, u'Dallas', u'USA', u'Texas', 1188580), (3801, u'San Antonio', u'USA', u'Texas', 1144646)]

The results are available in special local variable

\_

, and can be assigned to a variable of your choice:

::

In [3]: my\_result = \_

Pgcli only runs on Python3.6+ since 2.2.0, if you use an old version of Python, you should use install

pgcli \<= 2.2.0

.

Thanks:

A special thanks to

Jonathan Slenders <https:></https:>

_ for creating

Python Prompt Toolkit <http:></http:>

_, which is quite literally the backbone library, that made this app possible. Jonathan has also provided valuable feedback and support during the development of this app.

Click <http:></http:>

_ is used for command line option parsing and printing error messages.

Thanks to

psycopg <http:></http:>

_ for providing a rock solid interface to Postgres database.

Thanks to all the beta testers and contributors for your time and patience. :)

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