Query. Learn. Ship faster.
Real SQLite WASM, a full MongoDB aggregation simulator, and 60+ Redis commands.
Press Ctrl+Enter to run.
Examples:
Basic SELECT
JOIN + GROUP BY
Window Function
CTE
Subquery
DDL + INSERT
◯ Run a query to see results here.
Examples:
Find
Filter + Sort
Aggregate
UpdateMany
InsertOne
◯ Run a query to see results here.
Examples:
Strings
Hashes
Lists
Sets
Sorted Sets
◯ Run commands to see output here.
Real SQLite (WebAssembly)
Your SQL runs against a real SQLite database compiled to WASM. Seeded with users, orders, and products tables. CREATE TABLE, INSERT, and DDL all work.
MongoDB Aggregation Simulator
Supports find, aggregate ($match, $group, $sort, $project, $unwind), insertOne, updateMany, deleteMany, countDocuments, and distinct on in-memory collections.
Redis Command Simulator
60+ commands across Strings, Hashes, Lists, Sets, and Sorted Sets. Seeded with real keys. EXPIRE and TTL are supported. Data persists for the session.