PostgreSQL Online Compiler / SQL Runner

Write, test, and execute PostgreSQL queries online directly from your browser with our free Online PostgreSQL Compiler / SQL Runner. Practice SQL queries, table operations, joins, JSONB logic, and supported PL/pgSQL code without installing PostgreSQL Server or database tools such as pgAdmin.

How to Use This PostgreSQL Compiler

  1. Write or paste your PostgreSQL code
    Enter SQL statements in the Code Editor. You can practice CREATE TABLE, INSERT, SELECT, UPDATE, DELETE, joins, aggregate functions, JSONB operations, and supported PL/pgSQL code.
  2. Click the Run button
    Select Run to execute your PostgreSQL query or block. If the code contains a syntax or execution error, review the returned message, make the required correction, and run it again.
  3. Check the Output screen
    Query results, execution messages, or errors appear in the Output panel. Use the available controls to copy, download, or delete the output before testing another query.

Key Features

  • Free Online PostgreSQL SQL Runner: Write and execute PostgreSQL queries directly from a modern web browser.
  • Zero Installation: No need to install PostgreSQL Server, pgAdmin, or configure a local database for supported exercises.
  • Instant SQL Execution: Click Run and quickly review query results or database errors.
  • Table Operations: Practice CREATE, INSERT, UPDATE, DELETE, and supported schema operations.
  • Complex JOIN Queries: Test INNER JOIN, LEFT JOIN, and other supported relational queries.
  • JSONB Practice: Experiment with PostgreSQL’s JSONB data type and supported JSON operators.
  • PL/pgSQL Support: Test supported procedural blocks, conditions, loops, and database logic.
  • Dark and Light Mode: Switch the Code Editor theme for comfortable SQL development.
  • Output Controls: Copy, download, or clear query results directly from the Output panel.
1. How do I run a basic SELECT query in this online PostgreSQL compiler?

Use the SELECT statement to retrieve data from a table.

To retrieve only selected columns:

You can also filter and sort the result:

Enter the query in the Code Editor, click Run, and review the returned rows in the Output screen.

No. You can use this Online PostgreSQL Compiler / SQL Runner directly from your browser for supported SQL exercises without installing PostgreSQL Server or pgAdmin.

A full PostgreSQL installation may still be required for production databases, persistent storage, user management, backups, extensions, external application connections, and advanced server configuration.

Yes. You can create sample tables, insert records, and practice supported PostgreSQL joins.

After adding data, you can test a join:

You can also practice aggregation:

This makes the tool useful for learning relational queries and database relationships.

The editor can be used for supported PL/pgSQL execution, allowing you to practice procedural PostgreSQL logic in environments where those features are enabled.

For example:

You can also test loop logic:

PL/pgSQL extends regular SQL with procedural features such as variables, conditions, loops, functions, and exception handling, making it useful for more advanced PostgreSQL database logic.