sqlfmt vs Sqruff

sqlfmt is a free formatter for PostgreSQL SQL, available as a command-line tool and as a browser formatter running through WebAssembly. Its river-aligned style pads clause keywords so they share a column. The CLI reads SQL from files or stdin and writes formatted SQL to stdout; it can also rewrite files in place, list files needing changes, and show unified diffs. Its explain subcommand formats PostgreSQL plan text and can provide advice, canonicalized output, or structural comparisons. Plan advice describes join order, join and access methods, and parallelism, without costs, row estimates, or timing. The explain diff operation returns exit code 0 for structurally identical plans and 1 when structures differ, so it can be used in scripts and CI. A Go subpackage provides formatting for Go programs, and the project includes Emacs and Vim integrations. The browser build exposes formatting and version functions to JavaScript. Deeply nested subqueries and less common upsert or DDL forms remain best-effort areas. sqlfmt is intended for standalone formatting and SQL used in The Art of PostgreSQL book and courses.

Sqruff is a free SQL linter and formatter written in Rust, focused on formatting valid SQL for particular dialects and providing linting and fixes. It offers configurable automated formatting, custom rules, and column-level data lineage analysis for SQL queries. Dialects include ANSI, Athena, BigQuery, ClickHouse, Databricks, DuckDB, MySQL, Oracle, Postgres, Snowflake, SQLite, and Trino, among others. Dialect and rule settings are read from a project `.sqruff` configuration file. Developers can use the maintained VS Code and Zed integrations, or an LSP server with other LSP-capable editors. A documented GitHub Action supports use in CI, and a browser playground is available. Installation options include Homebrew, a bash installer, pip, cargo, binary releases, and an official Docker image. The public repository provides an Apache-2.0 license. The project identifies dbt project support as experimental and is associated with Quary, an open-source analytics platform for engineers based in the United Kingdom.