SQL Formatter

Make SQL queries easier to read, review, and debug in your browser.

Input
Output
0 characters 0 lines

What does SQL Formatter do?

SQL Formatter formats SQL queries with consistent indentation and keyword layout.

  • Primary use: SQL Formatter formats SQL queries with consistent indentation and keyword layout.
  • Key technical fact: SQL statements commonly include DQL, DML, and DDL operations such as SELECT, INSERT, UPDATE, and CREATE.
  • Practical check: Run the formatted or minified output through your parser, tests, or runtime when exact syntax behavior matters.
Topic Direct answer Source
Direct answer SQL Formatter formats SQL queries with consistent indentation and keyword layout. Browser JavaScript
Key fact SQL statements commonly include DQL, DML, and DDL operations such as SELECT, INSERT, UPDATE, and CREATE. Browser JavaScript
Processing model Runs locally in the browser; no production Node server receives the input. Browser JavaScript

Make SQL logic easier to follow

SQL Formatter rewrites query layout so clauses, joins, selected columns, predicates, and ordering are easier to scan. It is useful for debugging reports, reviewing migrations, documenting examples, and untangling one-line queries from logs.

Formatting should preserve SQL logic, but dialects differ. Vendor-specific syntax, procedural blocks, quoted identifiers, comments, and unusual operators should be checked in the database engine you actually use.

How to use

  1. Paste your SQL query into the input editor.
  2. Click Format SQL to arrange clauses and indentation.
  3. Review the formatted SQL for preserved predicates, joins, aliases, comments, and literals.
  4. Use Copy for the clipboard, Download for a file, or Clear to reset.

What is SQL Formatter?

SQL Formatter is a browser-based utility for improving SQL readability. It separates major clauses such as SELECT, FROM, JOIN, WHERE, GROUP BY, and ORDER BY so query intent is clearer.

SQL is executed by a database, not by the formatter. Always run important formatted queries against the target database or test suite before committing them.

Input notes

Paste SQL text only. Remove log prefixes, timing output, shell prompts, or application string escapes first. Keep dialect-specific syntax in mind when copying formatted SQL back into code.

Example

A one-line query becomes easier to review when columns, joins, and filters are separated:

--- Unformatted Input ---
SELECT u.name, u.email, o.total FROM users u JOIN orders o ON u.id=o.user_id WHERE o.total>100 ORDER BY o.total DESC;

--- Formatted Output ---
SELECT
  u.name,
  u.email,
  o.total
FROM users u
JOIN orders o ON u.id = o.user_id
WHERE o.total > 100
ORDER BY o.total DESC;

MCP integration

MCP (Model Context Protocol) lets AI agents and apps discover and run Coding.Tools utilities for repeatable conversions, formatting, hashing, and generation workflows.

MCP tool name: sql-formatter

MCP endpoint: https://coding.tools/mcp

Call tools/list first. Each tool entry includes inputSchema, outputSchema, and examples so an AI agent or client can build valid arguments without guessing.

For tools/call, read result.content[0].text for the display value and result.structuredContent for machine parsing. Tool-level failures return isError: true; protocol failures return a JSON-RPC error.

Example tools/call request:

curl -s https://coding.tools/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json" \
  -H "MCP-Protocol-Version: 2025-06-18" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"sql-formatter","arguments":{"input":"select id,total from invoices where paid = 1 order by total desc"}}}'

Most text and data tools accept an input string plus optional options. Browser-only image tools are listed for discovery and return a web UI link when they need browser image APIs.