Firebird Online Compiler / SQL Runner

Write, test, and execute Firebird SQL queries online directly from your browser with our free Online Firebird Compiler / SQL Runner. Practice SELECT queries, table creation, data manipulation, filtering, joins, aggregation, and other supported Firebird SQL operations without installing a local Firebird server or GUI tools such as FlameRobin.

How to Use This Firebird Compiler

  1. Write or paste your Firebird SQL
    Enter SQL statements in the Code Editor. You can practice commands such as SELECT, CREATE TABLE, INSERT, UPDATE, DELETE, WHERE, ORDER BY, and supported joins.
  2. Click the Run button
    Select Run to execute your Firebird SQL query. If your statement contains a syntax or execution error, review the returned message, correct the query, and run it again.
  3. Check the Output screen
    Query results and execution messages appear in the Output panel. Use the available controls to copy, download, or delete the output before testing another Firebird query.

Key Features

  • Free Online Firebird SQL Runner: Execute Firebird SQL directly from a modern web browser.
  • Zero Installation: No need to install Firebird Server or FlameRobin for supported SQL exercises.
  • Instant SQL Execution: Click Run and quickly review query results or error messages.
  • Standard Relational Queries: Practice filtering, sorting, grouping, aggregation, and supported joins.
  • Table Operations: Test CREATE TABLE, INSERT, UPDATE, and DELETE statements.
  • RDB$DATABASE Practice: Use Firebird’s special system table for simple expressions and single-row queries.
  • Dark and Light Mode: Switch the Code Editor theme for comfortable SQL practice.
  • Output Controls: Copy, download, or clear query results directly from the Output panel.
1. How do I run a basic SELECT query using RDB$DATABASE?

Firebird provides the special RDB$DATABASE system table, which is commonly useful when you want to evaluate an expression without querying your own application table.

You can also test calculations:

Or return the current date:

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

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

A local or hosted Firebird environment may still be required for production databases, persistent data, backups, authentication, external application connections, stored procedures, and advanced database administration.

Yes. You can practice supported table creation, insertion, retrieval, updating, and deletion operations.

Create a table:

Insert sample data:

Query the records:

You can also test updates:

Firebird is a relational database system that supports SQL, transactions, constraints, indexes, joins, views, stored procedures, triggers, and other database features used in structured applications.

For example, you can create related tables:

Then query related data with a join:

This makes Firebird useful for learning relational database concepts, SQL queries, transactional data handling, and backend database development.