SQL Graphviz

SQL Graphviz is a small python 3 script that generates a Graphviz visualization of a SQL schema dump.

Dependencies

SQL Graphviz relies on pyparsing to grok the schema dump. Ubuntu users should install using:

$ sudo apt-get install python3-pyparsing

while CheeseShop frequenters should install with pip:

$ sudo pip3 install pyparsing

Arch linux users can install the dependencies like this:

$ sudo pacman -S python-pyparsing

Alternatively, using pipenv as follows (ensure it is installed first):

$ pipenv install
$ pipenv shell

Usage

Using PostgreSQL, for example, to generate as a PNG file:

$ pg_dump --schema-only dbname | python sql_graphviz.py | dot -Tpng > graph.png

The program will accept a named file, or if omitted as above, will take from stdin. Output to SVG:

$ pg_dump --schema-only dbname > dump.sql
$ python sql_graphviz.py dump.sql > graph.dot
$ dot -Tsvg graph.dot > graph.svg

Example

Credits

Extended from http://energyblog.blogspot.co.uk/2006/04/blog-post_20.html by EnErGy [CSDX]

References

• http://pythonhosted.org/pyparsing/

The MIT License (MIT)

Copyright (c) 2014 Richard Hull & EnErGy [CSDX]

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.