planter

Generate PlantUML ER diagram textual description from PostgreSQL tables

Why created

A team with only software engineers doesn't need ER diagram that much as long as they have decent experience in Relational Database modeling. However, it becomes very helpful to have always-up-to-date ER diagram when marketing/promotion/operation teams consisting of those who are fluent in writing/reading SQL, join to the game.

PlantUML supports ER diagram in the latest version with this awesome pull request. The tool, planter, generates textual description of PlantUML ER diagram from pre-existing PostgreSQL tables, and makes it easy to share visual structure of relations with other teams.

Installation

go get -u github.com/achiku/planter

Quick Start

$ planter postgres://[email protected]/planter?sslmode=disable -o example.uml
$ java -jar plantuml.jar -verbose example.uml

Specify table names

planter postgres://[email protected]/planter?sslmode=disable \ 
    -t order_detail \
    -t sku \
    -t product

Help

$ planter --help
usage: planter [<flags>] <conn>

Flags:
      --help             Show context-sensitive help (also try --help-long and --help-man).
  -s, --schema="public"  PostgreSQL schema name
  -o, --output=OUTPUT    output file path
  -t, --table=TABLE ...  target tables (can handle regular expressions)
  -x, --xtable=TABLE ... exclude target tables (can handle regular expressions

Args:
  <conn>  PostgreSQL connection string in URL format

Test

setup database.

create database planter;
create user planter;

run go test ./... -v