# SQL Viewer

Free online SQL viewer. Open .sql scripts directly in your browser without uploading them.

> Canonical page: https://elysiatools.com/en/viewers/sql

- **Category:** Text Files

- **Supported formats:** .sql

## Overview

This SQL viewer renders query scripts locally in your browser. SQL (Structured Query Language) defines and queries data in relational databases via DDL, DML, joins, and aggregations. Pick a sample or choose your own .sql file to inspect statements and clauses with highlighting.

## When to use

- You have a SQL file and want to read it without a database client.
- You need to inspect joins, CTEs, or window functions quickly.
- You are on a device without a DB tool and need to browse a .sql file.

## How it works

- Select a built-in sample or choose your own .sql file.
- The viewer renders the script with syntax highlighting in the browser, with no upload.
- Inspect the statements, then switch samples or load another file any time.

## Use cases

- Reviewing schema definitions, inserts, and selects.
- Inspecting joins, aggregates, and window functions.
- Browsing SQL migration or query scripts on any device.

## Samples

- **Simple Student Database**: Basic student information table with AUTO_INCREMENT and simple data types
- **Product Inventory System**: Product catalog with categories, foreign keys, and basic relational database concepts
- **Blog System**: Multi-table blog system with users, posts, comments, indexes, and timestamps
- **E-commerce Orders System**: Complete e-commerce system with customers, products, orders, and order items
- **Library Management System**: Complete library system with books, readers, borrowing records, and fines
- **Banking Account System**: Financial banking system with accounts, transactions, loans, and risk analysis
- **Hospital Management System**: Healthcare system with departments, doctors, patients, appointments, and medical records
- **Online Learning Platform**: Educational platform with users, courses, lessons, assignments, and progress tracking
- **Enterprise ERP System**: Complete enterprise resource planning system with HR, finance, procurement, sales, and inventory
- **Create, Insert, Select**: A SQL example with a table, inserts, and a filtered select
- **Joins & Window Functions**: SQL joins with aggregates and a RANK window function
- **CTE & Transaction**: A common table expression inside a transaction with a RETURNING clause

## Frequently asked questions

### Is this SQL viewer free?

Yes. It runs in your browser for free and needs no registration or installation.

### Are my SQL files uploaded?

No. Files opened from your device stay on your device. Only public sample files come from the server.

### Does it run the queries against a database?

No. The viewer shows the script with highlighting; it does not connect to or query a database.

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