“sql”

Demo UI of sql.js, SQLite compiled to JavaScript, for running queries on in-memory databases.

Format SQL for many dialects with configurable indentation and keyword case.

Draws an entity-relationship diagram from pasted CREATE TABLE statements, locally in the page.

SQLite playground for debugging and sharing SQL snippets, with the option to load your own data.

Formats SQL queries with indentation, with options for several SQL dialects.

Formats SQL for SQLite, PostgreSQL or MySQL with options for indentation and keyword case.

Run a real Postgres compiled to WebAssembly in the browser and try SQL against it.

Online converter that turns MySQL dump SQL into SQLite-compatible SQL.

Design database schemas visually, then export SQL for PostgreSQL, MySQL, SQLite and others.

DuckDB SQL shell that runs entirely in the browser via WebAssembly, reading local and remote files.

Entity-relationship diagram editor with SQL DDL import and export.

Formats, parses, validates and tokenizes SQLite SQL in the browser using a compiled parser.

Configurable random test data generator exporting to SQL, CSV, JSON, XML and more.

Renders PostgreSQL EXPLAIN output as an annotated tree so slow plan nodes stand out.

Postgres running in the browser through PGlite, paired with an AI assistant for schemas, CSV imports and diagrams.

Draws a PostgreSQL EXPLAIN JSON plan as a tree with cost and time per node.

Runs a query in browser-based Python SQLite and annotates EXPLAIN and query plan output in plain English.

Runs SQLite in WebAssembly and shows query results in about twenty formats including boxes, CSV, JSON and Markdown.

Drop in an SQLite file to look at tables and run SQL in the page.

Shows the VDBE bytecode SQLite generates for a query, using EXPLAIN.

Analyzes SQLite queries with APSW running in an in-browser Python environment.

Generates MySQL table definitions from a JSON sample.

Open-source generative BI engine that gives AI agents a governed semantic layer for correct SQL and shareable dashboards.

Parses SQLite SELECT queries into an abstract syntax tree shown as JSON and Python.