Kolumn

Infrastructure as Code for Database Schema Management

Note: The Kolumn CLI is written in Go. This npm package is a placeholder to reserve the package name and direct users to the correct installation method.

Installation

Kolumn CLI is available via:

Homebrew (macOS/Linux)

brew install schemabounce/tap/kolumn

Direct Download

Download from GitHub Releases

Docker

docker pull schemabounce/kolumn

What is Kolumn?

Kolumn is an Infrastructure as Code (IaC) tool for managing database schemas. Think of it as "Terraform for databases."

Key Features

• Declarative Schema Management - Define your database schema in HCL
• Multi-Provider Support - PostgreSQL, MySQL, Snowflake, BigQuery, and more
• Drift Detection - Detect unmanaged changes to your database
• Safe Migrations - Preview changes before applying them
• State Management - Track schema state across environments

Example

provider "postgres" {
  host     = "localhost"
  port     = 5432
  database = "production"
}

create "postgres_table" "users" {
  schema = "public"
  name   = "users"

  columns = {
    id = {
      type           = "BIGSERIAL"
      primary_key    = true
    }
    email = {
      type     = "VARCHAR(255)"
      not_null = true
      unique   = true
    }
  }
}

Documentation

• Getting Started
• CLI Reference
• Provider Documentation

Links

• Website: https://schemabounce.com
• Documentation: https://schemabounce.com/kolumn/docs
• GitHub: https://github.com/SchemaBounce/Kolumn
• Issues: https://github.com/SchemaBounce/Kolumn/issues

License

Apache-2.0