Generate database table diagram from SQL data definition.

Overview

sql2diagram

Generate database table diagram from SQL data definition. e.g. "CREATE TABLE ..." See Example below

How does it works?

Analyze the SQL to generate PlantUML ER diagram, then generate diagram image through PlantUML online service.

Usage

Setup

Install required dependence through python3 virtual env:

python3 -m venv venv
. venv/bin/activate
pip3 install -r requirements.txt

Command line options

$ ./sql2diagram.py -h
usage: sql2diagram.py [-h] [--output-file OUTPUT_FILE] input_file

SQL DDL to diagram

positional arguments:
  input_file            SQL DDL input file

optional arguments:
  -h, --help            show this help message and exit
  --output-file OUTPUT_FILE, -o OUTPUT_FILE
                        Output file. extension must be one of .puml, .png, .svg, .esp, .txt

Example

$ ./sql2diagram.py sample/tables.sql
sample/tables.sql -> sample/tables.png

Input: sample/tables.sql:

CREATE TABLE comments (
    tid REFERENCES threads(id),
    id INTEGER PRIMARY KEY,
    parent INTEGER,
    created FLOAT NOT NULL,
    modified FLOAT,
    mode INTEGER,
    remote_addr VARCHAR,
    text VARCHAR,
    author VARCHAR,
    email VARCHAR,
    website VARCHAR,
    likes INTEGER DEFAULT 0,
    dislikes INTEGER DEFAULT 0,
    voters BLOB NOT NULL,
    notification INTEGER DEFAULT 0
);

CREATE TABLE threads (
    id INTEGER PRIMARY KEY,
    uri VARCHAR(256) UNIQUE,
    title VARCHAR(256)
);

CREATE TABLE preferences (
    key VARCHAR PRIMARY KEY,
    value VARCHAR
);

Output: default to png image file:

sample/tables.png

References

Owner
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