Ridgepole

Spec sheet

Purpose

Ridgepole manages database schemas by defining them with Rails DSL and updating the database to match.Read 4 Oct 2026 · github.com

Database compatibility detail

The README advises matching check constraint expressions to the database's exported form to avoid unnecessary migrations.Read 4 Oct 2026 · github.com

Database support

The README documents MySQL and PostgreSQL examples and states that SQLite is not supported.Read 4 Oct 2026 · github.com

Distribution

Ridgepole is distributed as a Ruby gem and the repository identifies its license as MIT.Read 4 Oct 2026 · github.com

Dry run

The --dry-run option previews schema changes before applying them.Read 4 Oct 2026 · github.com

Installation

Ridgepole can be added to an application's Gemfile or installed with gem install ridgepole.Read 4 Oct 2026 · github.com

Partitioning

The README states that partitioning is no longer supported from Ridgepole v1.1.0.Read 4 Oct 2026 · github.com

Rails compatibility

The README says Ridgepole v3.1.0 supports Rails 8.1 and v3.0.0 supports Rails 8.0.Read 4 Oct 2026 · github.com

Rename behavior

When renamed_from is used on a table, other changes to that table are not detected in the same migration and must be applied in a separate step.Read 4 Oct 2026 · github.com

Schema features

The README demonstrates table and column renames, foreign keys, check constraints, indexes, generated columns, and SQL execution.Read 4 Oct 2026 · github.com

Schema workflow

It can export a database schema to a Schemafile, compare schema definitions, and apply changes.Read 4 Oct 2026 · github.com

Table deletion

Dropping tables is skipped by default in Ridgepole v1.0 and later; the README says to pass --drop-table to enable it.Read 4 Oct 2026 · github.com

Plans and prices

Every Ridgepole plan and price →

Where Specifiction places it

• Database Migration Tools#27 of 327.1