What is SQL formatting?

SQL formatting is the process of converting messy SQL code into a well-structured, easy-to-read format. By adding proper indentation, line breaks, and spacing, the code becomes easier to understand and maintain. This improves code readability and helps teams maintain consistent coding standards.

Which database dialects are supported?

We support multiple mainstream database dialects including: MySQL, PostgreSQL, Oracle PL/SQL, SQL Server (T-SQL), SQLite, MariaDB, TiDB, BigQuery, and standard SQL. Each dialect has specific syntax recognition for optimal formatting results.

Will my SQL code be uploaded to a server?

No. All SQL formatting is processed locally in your browser using JavaScript. Your code never leaves your device, ensuring complete data privacy and security. This makes our tool safe for formatting sensitive database queries.

How do I customize formatting options?

You can customize formatting options in the settings panel: choose indent size (2 or 4 spaces, or tab), select keyword case (uppercase, lowercase, or preserve original), set lines between queries, and select your target database dialect for optimal results.

What is SQL minification used for?

SQL minification converts formatted SQL code into a single line by removing extra spaces and line breaks. This reduces code size for transmission and storage, making it useful for embedded systems, API calls, and scenarios where minimal size is required.

Will formatted SQL change execution results?

No. SQL formatting only changes the display format of the code (indentation, spacing, line breaks). It does not affect the SQL semantics or execution results. Your queries will produce identical results before and after formatting.

Can it handle large SQL files?

Yes. Our tool is built on a high-performance parsing engine that can handle large stored procedures, complex queries, and multi-statement scripts. The processing happens locally in your browser, so performance depends on your device capabilities.

Is this tool free to use?

Yes, SQL Formatter is completely free to use with no registration required, no ads, and no usage limits. You can format unlimited SQL code without any restrictions or hidden fees.

功能特性

Name: SQL Formatter
Availability: InStock
Rating: 4.9 (1250 reviews)
Author: SQL Formatter

强大的SQL格式化功能，满足您的所有需求

多数据库方言支持

支持 MySQL、PostgreSQL、Oracle PL/SQL、SQL Server、SQLite、MariaDB、TiDB、BigQuery 等多种数据库方言，自动识别特定语法。

MySQL 特定函数支持
PostgreSQL 语法扩展
Oracle PL/SQL 块处理
SQL Server T-SQL 支持

自定义格式化选项

完全控制格式化输出，满足团队代码规范要求。

可配置缩进大小（2/4 空格或 Tab）
关键字大小写转换
查询间空行数控制
别名对齐选项

SQL 压缩

将格式化的 SQL 压缩为单行，减小代码体积，适用于传输和存储场景。

移除多余空白
保留语义完整性
适合嵌入式场景
一键压缩还原

语法验证

基本的 SQL 语法检查，帮助发现常见错误。

括号匹配检查
关键字拼写验证
基本语法结构检查
错误位置提示

隐私保护

所有处理在您的浏览器本地完成，代码永不离开设备。

纯客户端处理
无服务器交互
无数据收集
完全隐私安全

响应式设计

完美适配桌面端和移动端，随时随地使用。

桌面端双栏布局
移动端优化体验
深色/浅色主题
中英双语界面