Free SQL Formatter & Beautifier
An SQL formatter and beautifier formats SQL queries with proper indentation, uppercase keywords, and readable structure. Paste your SQL below to format or minify it instantly.
What Is SQL Formatting?
SQL formatting takes a compact or messy query and adds consistent indentation, line breaks, and keyword casing to make it human-readable. Each major clause (SELECT, FROM, WHERE, JOIN, GROUP BY, ORDER BY) starts on its own line. Subqueries are indented. Keywords are uppercased. The result is a query you can read, debug, and review in seconds instead of parsing a wall of text.
You would use SQL formatting when debugging queries from application logs, reviewing database migrations, writing documentation with SQL examples, standardizing team code style, and preparing queries for code review.
Code Examples for SQL Formatting
JavaScript (sql-formatter package)
// npm install sql-formatter
const { format } = require('sql-formatter');
const ugly = 'SELECT u.id,u.name,o.total FROM users u ' +
'INNER JOIN orders o ON u.id=o.user_id ' +
'WHERE o.created_at>2024-01-01 AND u.active=true ' +
'ORDER BY o.total DESC LIMIT 10';
const formatted = format(ugly, {
language: 'postgresql',
keywordCase: 'upper',
indentStyle: 'standard',
tabWidth: 2,
});
console.log(formatted);Python (sqlparse)
# pip install sqlparse
import sqlparse
ugly = "SELECT u.id,u.name FROM users u INNER JOIN orders o ON u.id=o.user_id WHERE u.active=true LIMIT 10"
formatted = sqlparse.format(
ugly,
reindent=True,
keyword_case='upper',
indent_width=2,
)
print(formatted)
# Parse and analyze SQL tokens
parsed = sqlparse.parse("SELECT id FROM users WHERE active = true")[0]
for token in parsed.tokens:
if not token.is_whitespace:
print(f'{token.ttype}: {token}')Go
package main
import (
"fmt"
"strings"
)
func uppercaseKeywords(sql string) string {
keywords := []string{
"SELECT", "FROM", "WHERE", "AND", "OR",
"INNER JOIN", "LEFT JOIN", "ORDER BY", "GROUP BY",
"HAVING", "LIMIT", "INSERT INTO", "UPDATE", "SET",
}
result := sql
for _, kw := range keywords {
result = strings.ReplaceAll(
result,
strings.ToLower(kw),
kw,
)
}
return result
}
func main() {
sql := "select id, name from users where active = true order by name limit 10"
fmt.Println(uppercaseKeywords(sql))
}How to Format SQL Online
1. Choose your mode. Click Format / Beautify to add proper indentation and uppercase keywords, or Minify to compress your SQL into a single line with minimal whitespace.
2. Paste your SQL. Drop your query into the input box. The formatter processes it in real time, uppercasing keywords like SELECT, FROM, WHERE, and JOIN while adding line breaks before each major clause.
3. Review the output. The formatted SQL appears below with proper indentation. Sub-clauses like AND and OR are indented under their parent clause for clarity.
4. Copy the result. Click Copy to copy the formatted or minified SQL to your clipboard.
Why SQL Formatting Matters for Developers
SQL is the universal language of relational databases, powering everything from small SQLite files to massive PostgreSQL and Oracle data warehouses. Despite its ubiquity, SQL formatting is often an afterthought. Queries get written as single lines, copied from logs without formatting, or auto-generated by ORMs with no regard for readability. A SQL formatter solves this by enforcing consistent structure automatically.
Readability speeds up debugging. A well-formatted query with each clause on its own line makes it immediately clear which tables are being joined, what filters are applied in the WHERE clause, and how results are ordered or grouped. When a query returns unexpected results, formatted SQL lets you isolate the problem clause in seconds instead of parsing a wall of text.
Code reviews benefit from consistency. When every developer on a team formats SQL differently, pull request diffs become noisy with formatting changes mixed in with logic changes. A standardized format eliminates this noise. Reviewers can focus on what the query does rather than how it looks.
Uppercase keywords are a convention, not a requirement. SQL keywords are case-insensitive in every major database engine. Writing SELECT or select produces the same result. However, the uppercase convention dates back to the earliest SQL style guides and remains the most widely adopted standard. It creates a visual hierarchy that separates structural keywords from user-defined identifiers like table and column names.
Minification has its place. While readable SQL is essential during development, minified SQL is useful when embedding queries in application code, URL parameters, or compact log entries. Removing whitespace reduces payload size and prevents multi-line string issues in some programming languages.
Frequently Asked Questions About SQL Formatter
What does a SQL formatter do?
A SQL formatter takes a raw SQL query and reformats it with proper indentation, uppercase keywords, and line breaks so the structure is easy to read. It separates clauses like SELECT, FROM, WHERE, and JOIN onto their own lines and indents sub-clauses like AND and OR.
Why should I uppercase SQL keywords?
Uppercasing SQL keywords like SELECT, FROM, and WHERE is a widely adopted convention that makes queries easier to scan. It creates a clear visual distinction between keywords and identifiers (table names, column names). While SQL is case-insensitive for keywords, uppercase improves readability, especially in long queries with many joins and conditions.
What is the difference between formatting and minifying SQL?
Formatting adds indentation and line breaks to make SQL human-readable. Minifying removes all unnecessary whitespace and collapses the query to the smallest possible string. Use formatting during development and code review. Use minifying when embedding SQL in application code, logs, or URLs where space matters.
Does this tool validate SQL syntax?
This tool focuses on formatting and does not validate SQL syntax against a specific database engine. It uppercases recognized keywords and adds structural indentation, but it does not check whether your table names, column names, or SQL dialect-specific syntax are correct. For syntax validation, use your database client or a dedicated SQL linter.
What SQL dialects does this support?
The formatter works with standard SQL keywords used across all major databases including MySQL, PostgreSQL, SQLite, SQL Server, Oracle, and MariaDB. It uppercases common keywords like SELECT, FROM, WHERE, JOIN, GROUP BY, ORDER BY, HAVING, INSERT, UPDATE, DELETE, CREATE, ALTER, DROP, UNION, LIMIT, OFFSET, CASE, and WHEN.
Is my SQL data sent to a server?
No. All formatting and minification happens entirely in your browser using JavaScript. Your SQL queries never leave your device. There is no server-side processing, no logging, and no data storage.
Can I format multiple SQL statements?
Yes. You can paste multiple SQL statements separated by semicolons. The formatter processes the entire input as a single block, uppercasing keywords and adding line breaks before major clauses throughout the text.
Why do some developers prefer lowercase SQL keywords?
Some teams prefer lowercase keywords to match their ORM-generated queries or to reduce visual noise in code editors with syntax highlighting. Both conventions are valid. The important thing is consistency within a project. This formatter defaults to uppercase because it is the most widely used convention in SQL style guides.
Can the formatter handle complex queries?
Yes. The SQL formatter handles subqueries, CTEs (WITH clauses), window functions, CASE expressions, multiple JOINs, and nested conditions. Each clause gets proper indentation regardless of query complexity.
Does formatting change how a query executes?
No. SQL formatting is purely cosmetic — whitespace and line breaks have no effect on query execution or performance. A minified query and a beautifully formatted query produce identical results in any SQL database.
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Format SQL here, then use our other tools for JSON, XML, and data conversion.