2.9.26
Released 2 Nov 2026
Official NullReed website
sql practice that runs on your computer
NullReed 2.9.26 runs SQL practice online locally on your Windows PC with an interface in 13 languages and no account needed. Get it.
Correct the GROUP BY clause in this query and verify the output.
- read_file
exercises.sqlloaded - edit_file
exercises.sql+2 lines - Shell
dbcli.exe < exercises.sqlexit 0 - grep
COUNT(*)3 matches - write_file
result.txtsaved
waiting for your OK before the next stepRejectAccept
34 MB
Setup program download
25 MB
Single .exe file
13
Interface translations
Windows 10/11
x64 architecture
SHA-256
Verify installer
sql practice for everyone
NullReed runs real queries on your own machine so you stay in control of your learning path during sql practice sessions with the agent executing tools to show results. Review immediately. Each action appears as a card with its output for you to review immediately. The software supports this workflow and helps you build essential skills effectively.
Practice sql queries with diff
edit_file proposes a fix and shows a diff for your review so you can verify changes before they are applied to the code, while Shell runs the client to execute the query. Verify accuracy. read_file inspects the current state of your exercises.sql file to ensure accuracy. grep searches for specific patterns within your database queries to locate issues. write_file creates the seed script and exercise files for your practice session. The version 2.9.26 runs on Windows 10/11 with 13 languages.
Tool trace
edit_file exercises.sql → diff
Shell dbcli -f exercises.sql > result.txt → exit 0
read_file result.txt → loadedLeft join practice with null checks
NullReed 2.9.26 for Windows 10/11 uses edit_file to show a diff before acceptance, so you verify the join logic carefully and understand the data thoroughly. Run the client. Shell runs terminal commands to execute the database query successfully. Grep searches the output text for specific patterns in the log files. Cron schedules prompts to run on a set schedule automatically every day. Practice sql queries by comparing results with expected rows in the folder.
Tool trace
edit_file exercises.sql -> adds the LEFT JOIN query with IS NULL filter
read_file exercises.sql -> verifies the syntax and expected result comments
Shell runs the database client with the script file -> saves the output to result.txt
read_file result.txt -> verifies the output matches the expected non-matching rowssql exercises with auto-run
NullReed uses write_file to create the seed script and Shell to execute your commands so that you can practice sql exercises with immediate feedback. It works locally. edit_file corrects a query quickly, and read_file shows your solutions. The example file contains 11 lines of standard SQL code for practice. No data-changing statements appear in that standard file during your testing phase. You can ask how long to learn sql with confidence.
Practise SQL on your own computer
You prefer local work, so the agent uses read_file to load your data and edit_file to correct the query before Shell executes the command. Private data stays local. It saves the result to a text file for later review. You can practice sql meaningfully by using these tools effectively. Cron schedules prompts and grep searches for patterns in files. The agent runs Shell to execute the command locally on your machine with version 2.9.26.
How it differs from a typical chat assistant
NullReed v2.9.26 is a personal picks for learning sql agent that runs tools and shows each result as a card with real output. It runs tools.
| Typical chat assistant | NullReed | |
|---|---|---|
| Action | Suggests commands | Runs commands |
| Result | Shows text | Shows card |
| Edit | Regenerates | Shows diff |
| Control | Auto-run, Ask first, Plan only | Ask first |
How to start
- Download the 34 MB setup program on Windows 10 or 11.
- Connect a model and choose the practice folder.
- Open the chat and type your first SQL query task.
- Review the diff in Ask first mode before accepting changes.
Who uses it and when
NullReed helps beginners practice SQL meaningfully by running tools locally so they see real results without needing an online editor for their daily exercises. Learn SQL. Join practice is easy for everyone to master quickly.
With a local model, nothing leaves the machine, while cloud prompts go only to the specific endpoint you pick for your queries and exercises. No telemetry. The 34 MB setup installs on Windows quickly.
Students use this agent to practice sql practice questions, and the tool compares output with expected results as a help while the student reviews it. Safe practice. They avoid production data during their daily review sessions today.
Frequently asked questions
What is sql practice?
SQL practice is learning to write queries on your own computer, and you use files with a local database while NullReed runs the tools for you. Cards show results. You see them in cards and control the entire process.
Is sqloasis.com the official NullReed website?
Yes, sqloasis.com is the official NullReed website, and the download button provides the 34 MB setup program for Windows 10/11 users who want to install it. Verify the SHA-256 checksum. Use the Send feedback button for support.
How does NullReed help with your queries?
The agent compares your saved output with the expected result and explains differences such as duplicate rows or a missing GROUP BY column. Local execution. It runs database clients via Shell commands and saves output to text files.
Can I practice SQL on my own computer?
Yes, you can practice SQL on your own computer by using a script file and a database you set up locally for your exercises. Nothing leaves the machine. Privacy remains strictly local on your PC today.
What does it mean to practice SQL joins?
An INNER JOIN returns matched rows, while a LEFT JOIN keeps all left rows and fills missing right columns with NULL values, so filter with WHERE to return non-matching rows. Check the logic. Compare the output with an expected result to verify your SQL query logic.
Is NullReed an online practice site?
No, NullReed runs locally on Windows, but a cloud model receives your prompts while a local model keeps everything on your PC. Data stays local. Privacy depends on your model choice and your settings for this practice.
How do I verify the download?
The SHA-256 checksum verifies the installer integrity, so you must compare the result with the published manifest to ensure the file is authentic and safe. Match the hash. SmartScreen warns, so click More info and Run anyway after the hash matches.
Start your sql practice today
Download NullReed v2.9.26 for Windows 10/11, a 34 MB setup that runs locally so you control the process and see results. Install now.
Download NullReed for Windows ↗Explore more
Every page of this website is available in 20 languages. The app interface itself has 13.
Product overview ↗ Model configuration ↗ Workflow examples ↗ Download installer ↗ FAQ details ↗ Privacy policy ↗
