How do I convert SQL to Rails ActiveRecord?

Simply paste your SQL query into our converter tool and click 'Convert to ActiveRecord'. The tool will instantly generate the equivalent Rails ActiveRecord code. Our converter supports all major SQL operations including SELECT, INSERT, UPDATE, DELETE, JOINs, and subqueries.

Is the SQL to ActiveRecord converter free?

Yes, our SQL to ActiveRecord converter is 100% free to use. No sign-up, registration, or credit card required. You can convert unlimited SQL queries to ActiveRecord code instantly.

What SQL queries are supported?

We support all major SQL operations: SELECT queries with WHERE clauses, JOIN operations (INNER, LEFT, RIGHT), INSERT statements, UPDATE operations, DELETE queries, subqueries, aggregate functions (COUNT, SUM, AVG), GROUP BY, ORDER BY, and complex conditional logic.

How accurate is the SQL to ActiveRecord conversion?

Our converter handles most common SQL patterns with high accuracy. For complex queries involving advanced SQL features, we recommend reviewing and testing the generated ActiveRecord code. The tool is continuously improved based on user feedback.

Can I convert PostgreSQL, MySQL, and SQLite queries?

Yes, our converter works with SQL from PostgreSQL, MySQL, SQLite, and other standard SQL databases. ActiveRecord provides database-agnostic query methods that work across different database systems.

Do I need to install anything to use the converter?

No installation required! Our SQL to ActiveRecord converter is a web-based tool that works directly in your browser. Just visit our website, paste your SQL query, and get instant results.

How do I handle complex JOINs in ActiveRecord?

ActiveRecord provides several methods for JOINs: use .joins() for INNER JOINs, .left_joins() for LEFT JOINs, and leverage Rails associations whenever possible. Our converter automatically translates JOIN syntax to the appropriate ActiveRecord methods.

What if my converted ActiveRecord code doesn't work?

First, ensure your Rails models and associations are properly set up. Check that column names match your database schema. For complex queries, you may need to adjust the generated code. Visit our guide for detailed examples and troubleshooting tips.

How do I convert INSERT statements to ActiveRecord?

INSERT statements are converted to ActiveRecord create or new methods. Single inserts become Model.create(attributes), while bulk inserts use Model.insert_all(array_of_attributes). Our converter handles both single and batch operations automatically.

Can I convert UPDATE and DELETE queries?

Yes! UPDATE queries become Model.where(conditions).update_all(changes) or Model.update(id, attributes). DELETE queries are converted to Model.where(conditions).delete_all or Model.destroy(id) depending on the SQL pattern.

What about aggregate functions like COUNT, SUM, AVG?

Aggregate functions are fully supported. COUNT(*) becomes Model.count, SUM(column) becomes Model.sum(:column), AVG(column) becomes Model.average(:column). GROUP BY clauses are converted to .group(:column) chaining.

How are subqueries handled in the conversion?

Subqueries are converted to ActiveRecord's where with subquery syntax or leveraging associations. Complex subqueries might use .where('EXISTS (?)' subquery) or .joins() with nested queries depending on the SQL structure.

SQL to ActiveRecord Converter

Transform any SQL query into clean Rails ActiveRecord code instantly

Free online tool for Ruby developers • Supports JOINs, subqueries, and complex patterns • No registration required

New to ActiveRecord? Check out our comprehensive guide or browse practical examples

100% Free

No Sign-up Required

Instant Results

Note: Our converter handles most common SQL patterns accurately. For complex queries, please review and test the generated ActiveRecord code in your application.

Popular Conversions

SQL Query:

Used 3 times

SELECT * FROM users WHERE id IN (1, 2, 3, 4, 5)

ActiveRecord:

User.where(id: [1, 2, 3, 4, 5])

SQL Query:

Used 3 times

SELECT * FROM users JOIN posts ON users.id = posts.user_id

ActiveRecord:

User.joins(:posts)

SQL Query:

Used 2 times

SELECT * FROM users 
  LEFT JOIN book b ON b.id = users.id_book
  RIGHT JOIN role r ON r.id = users.id_role
  INNER J...

ActiveRecord:

User.joins(:car).right_joins(:role).left_joins(:book)

SQL Query:

Used 2 times

Select * from rails left joins upworks on upworks.rail_id = rails.id

ActiveRecord:

Rail.left_joins(:joins)

SQL Query:

Used 1 time

Select * from rails left joins upworks on upworks.rails_id = rails.id

ActiveRecord:

Rail.left_joins(:joins)

Why Convert SQL to ActiveRecord?

Faster Development

Convert complex SQL queries to ActiveRecord instantly, saving hours of manual translation and reducing development time.

Rails Best Practices

Generated ActiveRecord code follows Rails conventions and best practices, ensuring maintainable and readable code.

Learn ActiveRecord

Perfect for developers learning Rails or migrating from other frameworks. See how SQL concepts map to ActiveRecord.

Supported Databases

Our converter works with all major databases supported by Rails ActiveRecord:

PostgreSQL

Advanced features like JSON queries, window functions, and complex joins.

PostgreSQL Guide →

MySQL

Full support for MySQL syntax and specific database functions.

MySQL Guide →

SQLite

Perfect for development and testing environments.

See Guide →

Built for Rails

Generates Rails ActiveRecord code following proper conventions and best practices.

Instant Results

No setup, no registration, no waiting. Paste SQL and get production-ready ActiveRecord code in seconds.

Learn While Converting

Every conversion teaches Rails best practices. Perfect for teams learning ActiveRecord patterns.

SQL to ActiveRecord Conversion Examples

See how common SQL patterns translate to Rails ActiveRecord syntax:

Simple SELECT with WHERE

SELECT * FROM posts WHERE published = true AND created_at > '2024-01-01'

Converts to:

Post.where(published: true).where('created_at > ?', '2024-01-01')

INNER JOIN with Associations

SELECT users.name, posts.title FROM users INNER JOIN posts ON users.id = posts.user_id

Converts to:

User.joins(:posts).select('users.name, posts.title')

COUNT with GROUP BY

SELECT category, COUNT(*) FROM products GROUP BY category

Converts to:

Product.group(:category).count

ORDER BY with LIMIT

SELECT * FROM articles ORDER BY created_at DESC LIMIT 10

Converts to:

Article.order(created_at: :desc).limit(10)

View More Examples → Complete Guide

Looking for specific SQL patterns? Explore our guides:

SQL Patterns Performance Tips Documentation SELECT Queries JOIN Queries

Learn More About ActiveRecord

Query Guides

Performance

Database Specific

Why Use This Tool?

Fast & Simple

Convert SQL queries to ActiveRecord instantly without any setup or registration

Rails Best Practices

Generated code follows Rails conventions and ActiveRecord patterns

Learn ActiveRecord

Great for learning Rails patterns and migrating from other frameworks