TrySQL ยท open practice

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No sign-up, no setup. Choose the level you need and practice database concepts, SQL thinking, or RADB-style relational algebra right away.

Free practice hub

Everything opens directly in your browser.

Use it like a study desk: quick review first, harder query drills next, then homework-style RADB syntax when you want exam muscle memory.

Learn terms Write queries Drill RADB
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Level 1: Concepts

Relation, tuple, schema, keys, foreign keys, SQL breakdown, and RA basics. Best when the lecture words still feel blurry.

Open Level 1 100 Questions

Level 2: Query Drills

Ten chapters with code boxes, formal prompts, harder choices, and ordering practice for midterm-style reasoning.

Open Level 2 Homework Mode

RADB Syntax Lab

Practice the exact RA-adjacent style with project, select, cross, rename, union, diff, and bank-schema templates.

Open RADB Lab
Common schema

Shared Bank Schema

customer(name: text, credit: integer)
loan(no: string, type: text, minCredit: integer, amount: integer)
borrower(cname: text, lno: text, due: date)