SQL Formatter Online — Format SQL, Beautify & Clean Queries Free
Use the best free online SQL formatter and SQL beautifier to format SQL queries instantly. Format SQL from MySQL, PostgreSQL, SQLite, Snowflake, and 15+ dialects. This SQL query formatter runs entirely in your browser — no data leaves your device. Beautify, clean, and organize messy SQL in seconds.
SQLFormat.io is a free online SQL formatter and SQL beautifier that helps developers format SQL queries with proper indentation, alignment, and syntax clarity. Whether you need to format SQL for readability, beautify SQL code from legacy systems, or use a reliable SQL query formatter for daily work — this tool has you covered.
Paste your raw SQL into the input box, select your database dialect, and click Format. The formatter supports MySQL, PostgreSQL, SQLite, BigQuery, Snowflake, PL/SQL (Oracle), T-SQL (SQL Server), Hive, Spark SQL, DB2, MariaDB, Redshift, Trino, SingleStoreDB, and Standard SQL. Each dialect applies the correct syntax rules, keyword casing, and function formatting.
Use this SQL formatter online for: cleaning up exported queries, preparing code reviews, debugging complex joins with CTEs, or making SQL more readable in documentation. All processing is 100% client-side — your SQL queries are private and never sent to any server.
🧹 SQL Formatter
Recent Formats
15+ SQL Dialects
Supports MySQL, PostgreSQL, SQLite, Snowflake, BigQuery, and many more. Each dialect applies correct syntax rules for the best SQL code formatting.
Fast & Private SQL Beautifier
All formatting happens in your browser. No data sent to any server. This SQL beautifier and SQL formatter runs 100% client-side for maximum privacy.
Customizable Format
Choose indentation style (2 spaces, 4 spaces, tabs) and database dialect. Results are instantly formatted and ready to copy as clean, readable SQL code.
Free SQL Query Formatter
No sign-ups, no credit cards, no limits. Use this free online SQL query formatter and SQL pretty printer as much as you want, completely free forever.
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合理使用索引:WHERE、JOIN、ORDER BY 的列都应该考虑加索引 — tip 3/7