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sqldef

On the record

Audience
The README describes a workflow for database schema changes that uses a single SQL file containing the complete schema.github.com · read 4 Oct 2026
Browser demo
The online demo uses a WebAssembly build to diff two SQL schemas and generate DDLs.sqldef.github.io · read 4 Oct 2026
Distribution
The project provides pre-built single-binary executables and Docker images.github.com · read 4 Oct 2026
Idempotency
The README says sqldef operations are idempotent and safe to run multiple times.github.com · read 4 Oct 2026
Idempotent operations
The project says its operations are safe to run multiple times.github.com · read 4 Oct 2026
Integration
A GitHub Action is available to preview database schema changes.github.com · read 4 Oct 2026
Integrations
The README links to a GitHub Action that previews database schema changes.github.com · read 4 Oct 2026
License
The sqldef source files are distributed under the MIT License, while the parser is distributed under Apache License 2.0.github.com · read 4 Oct 2026
Linux limitation
The project says Debian packages are not currently available and recommends pre-built binaries or Docker images instead.github.com · read 4 Oct 2026
Linux package limitation
The README says Debian packages are not currently available and directs Linux users to pre-built binaries or Docker images.github.com · read 4 Oct 2026
Migration preview
The --dry-run option shows migrations without executing them.github.com · read 4 Oct 2026
Offline mode
It can compare two SQL files without connecting to a database, including for CI/CD, schema validation, and migration script generation.github.com · read 4 Oct 2026
Online demo
The official site says its online demo uses a WebAssembly build of sqldef to diff schemas and generate DDLs.sqldef.github.io · read 4 Oct 2026
Preview and offline modes
sqldef can preview migrations without executing them and compare SQL files without connecting to a database.github.com · read 4 Oct 2026
Purpose
sqldef is a CLI tool for diffing SQL schemas and managing RDBMS migrations with regular SQL DDLs.sqldef.github.io · read 4 Oct 2026
Rename support
The README says the @renamed annotation supports renaming tables, columns, indexes, and ENUM values.github.com · read 4 Oct 2026
Schema workflow
Users define a desired schema in SQL, and sqldef generates and applies migrations to bring the database to that state.github.com · read 4 Oct 2026
Security and licensing
The README states that sqldef source files are distributed under the MIT License, except the parser, which is under Apache License 2.0.github.com · read 4 Oct 2026

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