explaingit

tobilg/polyglot

Analysis updated 2026-05-18

810RustAudience · developerComplexity · 2/5Setup · easy

TLDR

A Rust-built tool that translates, parses, and formats SQL queries across more than 32 database dialects.

Mindmap

mindmap
  root((polyglot))
    What it does
      SQL dialect translation
      Parse and format SQL
    Tech stack
      Rust
      Python
      TypeScript
      WebAssembly
    Use cases
      Migrate between databases
      Support multiple backends
      Build cross dialect tooling
    Audience
      Developers
      Data engineers

Code map

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filefunction / class

What do people build with it?

USE CASE 1

Translate a SQL query written for MySQL into Snowflake or BigQuery syntax

USE CASE 2

Build queries programmatically with the fluent builder API instead of raw SQL strings

USE CASE 3

Try SQL translation instantly in the browser playground before installing anything

What is it built with?

RustPythonTypeScriptWebAssembly

How does it compare?

tobilg/polyglotjustjavac/dvmgrafeodb/grafeo
Stars810705618
LanguageRustRustRust
Setup difficultyeasyeasymoderate
Complexity2/52/53/5
Audiencedeveloperdeveloperdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · easy Time to first run · 5min

In plain English

Polyglot is a tool that translates SQL (Structured Query Language, the standard way to talk to databases) from one database dialect to another. Different databases like MySQL, PostgreSQL, Snowflake, and BigQuery all speak slightly different SQL "accents," meaning a query written for one database often won't work on another without changes. Polyglot handles that translation automatically, supporting over 32 dialects. Beyond translation, Polyglot can also parse SQL (break it down into its component parts), format it for readability, and let you build queries programmatically using a fluent builder API, meaning you can construct database queries step by step in code rather than writing raw SQL strings. It's built in Rust, a language known for speed and safety, and ships in multiple forms: as a Rust library, a Python package (installable with pip), and a TypeScript/JavaScript package (installable with npm) that runs in the browser via WebAssembly (Wasm, a way to run compiled code in web browsers). This means you can use Polyglot from almost any programming environment. You would reach for Polyglot when migrating a database from one platform to another, when your app needs to support multiple database backends, or when you want to build tooling that works across different SQL dialects. The playground lets you try it in a browser without installing anything. The full README is longer than what was provided.

Copy-paste prompts

Prompt 1
Help me use Polyglot's Python package to translate a PostgreSQL query to BigQuery
Prompt 2
Show me how to install Polyglot's npm package and run it in the browser via WebAssembly
Prompt 3
Explain how Polyglot's fluent query builder API works
Prompt 4
How would I use Polyglot to support both MySQL and Snowflake in the same app?

Frequently asked questions

What is polyglot?

A Rust-built tool that translates, parses, and formats SQL queries across more than 32 database dialects.

What language is polyglot written in?

Mainly Rust. The stack also includes Rust, Python, TypeScript.

How hard is polyglot to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is polyglot for?

Mainly developer.

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