SQL Prettify
Format SQL queries with keyword capitalisation and consistent indentation
Embed SQL Prettify ▾
Add this tool to your website or blog for free. Includes a small "Powered by ToolWard" bar. Pro users can remove branding.
<iframe src="https://toolward.com/tool/sql-prettify?embed=1" width="100%" height="500" frameborder="0" style="border:1px solid #e2e8f0;border-radius:12px"></iframe>
Community Tips 0 ▾
No tips yet. Be the first to share!
Compare with similar tools ▾
| Tool Name | Rating | Reviews | AI | Category |
|---|---|---|---|---|
| SQL Prettify Current | 3.8 | 2712 | - | Code Formatting |
| Javascript Beautifier | 4.1 | 1070 | - | Code Formatting |
| Javascript Formatter | 4.1 | 2289 | - | Code Formatting |
| Javascript Minifier | 3.9 | 1114 | - | Code Formatting |
| HTML Beautifier | 3.8 | 2956 | - | Code Formatting |
| HTML Minifier | 3.8 | 1768 | - | Code Formatting |
About SQL Prettify
Make Your SQL Readable Again with SQL Prettify
We have all been there. You pull a query from a log file, a colleague's Slack message, or a compressed ORM debug output, and it is one unbroken line of SQL stretching off the screen. Columns, joins, subqueries, conditions - all mashed together without a single line break. The SQL Prettify tool takes that mess and reformats it into clean, indented, human-readable SQL in one click.
Why Formatted SQL Matters More Than You Think
SQL readability is not just an aesthetic preference - it directly impacts your ability to understand, debug, and maintain database queries. A well-formatted query lets you immediately see the table relationships in JOIN clauses, identify filtering conditions in WHERE blocks, spot potential performance issues in subqueries, and verify that GROUP BY and ORDER BY columns match your intentions. When SQL is a single line of text, all of that structural information is invisible.
Studies on code comprehension consistently show that formatting has a measurable impact on how quickly developers understand logic. This applies to SQL just as much as it applies to Python or Java. The few seconds you spend running a query through a SQL formatter can save minutes of squinting at an unreadable wall of text.
What SQL Prettify Does Under the Hood
The tool parses your SQL statement and applies a consistent set of formatting rules. Keywords like SELECT, FROM, WHERE, JOIN, GROUP BY, ORDER BY, and HAVING are placed on their own lines and optionally uppercased for visual distinction. Column lists in SELECT clauses are broken into one column per line with aligned commas. JOIN clauses are indented to show the table relationship hierarchy. Subqueries are recursively formatted and indented to their nesting depth. Parenthesized expressions in WHERE clauses are aligned for readability.
The result is SQL that follows widely accepted formatting conventions. Whether you prefer leading commas or trailing commas, uppercase or lowercase keywords, tabs or spaces - the tool gives you clean output that any SQL developer can read immediately.
Scenarios Where SQL Prettify Is Indispensable
Debugging production queries. Your application's slow query log contains a monster query running for 30 seconds. The logged query is one line of minified SQL. Before you can analyze it, add missing indexes, or restructure joins, you need to read it. Paste it into SQL Prettify and the structure becomes immediately apparent. Now you can see the three unnecessary subqueries, the missing join condition, and the unindexed column in the WHERE clause.
Code reviews. Pull requests that modify SQL queries - whether inline in application code or in migration files - deserve the same readability standards as any other code. Formatting SQL consistently before committing it makes code reviews faster and more thorough. Reviewers can focus on logic rather than deciphering formatting.
Documentation and knowledge sharing. When you write technical documentation, wiki articles, or Jira tickets that include SQL queries, formatted SQL is dramatically easier for your readers to follow. A prettified query in a runbook means the on-call engineer at 3 AM can understand what it does without mental gymnastics.
Learning SQL. Students studying SQL benefit enormously from seeing queries in properly formatted form. The visual structure reinforces how clauses relate to each other and how data flows through the query. Many learners write better SQL simply by seeing their queries auto-formatted, because the structure reveals logical errors they missed in the compressed form.
Works With All Major SQL Dialects
The SQL Prettify tool handles standard SQL as well as dialect-specific syntax from MySQL, PostgreSQL, SQL Server, Oracle, and SQLite. Common extensions like MySQL's backtick-quoted identifiers, PostgreSQL's double-colon casting, SQL Server's square bracket identifiers, and Oracle's CONNECT BY hierarchical queries are all recognized and formatted correctly.
Paste your query, click prettify, and copy the result. Everything runs in your browser with zero server involvement. Your queries - which might contain table names, column names, or literal values that reveal sensitive schema information - never leave your machine. Clean SQL is readable SQL, and readable SQL is maintainable SQL. Give SQL Prettify a try.