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// Developer / Data

SQL Formatter online

Format and beautify SQL queries — keyword capitalization, proper indentation

SQL Formatter / Beautifier logo
by
CHUNKY
MUNSTER
// SQL input

How to Use the SQL Formatter / Beautifier

  1. Paste your SQL query — single-line or multi-line — into the input.
  2. Click Format to apply keyword casing and indentation.
  3. Read the formatted output; copy it back into your editor or PR.
  4. Use the Minify direction if you ever need to flatten it again.

Pasted SQL from logs, ORM debug output or someone else's code review is usually a single 800-character line that's impossible to read. This formatter splits the query along its major clause boundaries (FROM, WHERE, GROUP BY, ORDER BY, JOIN), uppercases the keywords, and indents subqueries and CTEs so the structure is visible at a glance.

How the SQL Formatter / Beautifier Works

It's a syntactic reformatter, not a semantic one — identifiers, string literals, and the order of clauses are never modified, so the formatted query is guaranteed to behave identically to the input. Comments (both -- and /* */ styles) are preserved in their original positions.

Frequently Asked Questions

Which SQL dialects are supported?

The formatter targets standard ANSI SQL, which covers the bulk of MySQL, PostgreSQL, SQL Server, Oracle and SQLite syntax. Vendor-specific extensions (PostgreSQL JSON operators, T-SQL TOP, Oracle CONNECT BY) are passed through but not specially indented.

Will it modify my query semantics?

No — only whitespace, line breaks and keyword case are changed. Identifiers, string literals, comments, and the order of clauses are left untouched, so the formatted query produces identical results when executed.

How are comments handled?

Both -- single-line and /* … */ block comments are preserved in their original positions. The formatter inserts line breaks around them when needed but never moves them across statement boundaries.

Why does the output sometimes wrap differently than I want?

Line breaking is keyword-driven, not column-width-driven. Long expressions in a SELECT or WHERE clause stay on one line because breaking them safely requires a full SQL parser, which would be overkill for a formatter.

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