dbmigrations ~main

Database migration tool

Database migration tool to apply all available migrations from db/migrations (customizable) directory. It is inspired by micrate.

Usage

Create the migrations directory in your project directory. For example,

cd myproject
mkdir -p db/migrations

Export the DATABASE_URL. For example,

export DATABASE_URL=postgres://postgres:secret@localhost:5432/myapp_dev

For SQLite,

export DATABASE_URL=sqlite:////var/lib/myapp/myapp.db

Scaffold

Now create the migration file by running the below command.

$ dub run [email protected] scaffold -n users
Created ./db/migrations/20240524213223-users.sql

Open the file and add the SQL for upgrade under -- +UP and downgrade SQL under -- +DOWN section. Example,

-- +UP
-- SQL in section '+UP' is included when this migration is applied
CREATE TABLE users(
  id                         BIGSERIAL PRIMARY KEY,
  name                       VARCHAR NOT NULL,
  email                      VARCHAR NOT NULL,
  password_hash              VARCHAR NOT NULL,
  created_at                 TIMESTAMP,
  updated_at                 TIMESTAMP
);

-- +DOWN
-- SQL section '+DOWN' is included when this migration is rolled back
DROP TABLE users;

Upgrade

Run dbmigrations up to apply all the available migrations.

$ dub run [email protected] up
OK  20240524135055-users
OK  20240524135713-api-keys

Status

Check the status of the migrations by running

$ dub run [email protected] status
Sep 02, 2024 06:09:50  20240524135055-users
              pending  20240524135713-api-keys

Downgrade(one by one)

$ dub run [email protected] down
OK  20240524135713-api-keys

TODO:

• Postgres and SQLite are supported now, add support for MySQL.

Contributing

• Fork it (https://github.com/aravindavk/dbmigrations/fork)
• Create your feature branch (git checkout -b my-new-feature)
• Commit your changes (git commit -asm 'Add some feature')
• Push to the branch (git push origin my-new-feature)
• Create a new Pull Request

Contributors

• Aravinda VK - Creator and Maintainer