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SQL Minifier

データ開発者

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入力

自動処理

出力

クライアント側

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ガイド

SQL Minifier

Compress your SQL queries by removing comments, collapsing whitespace, and stripping unnecessary spaces around punctuation — all while preserving string literals and quoted identifiers. Ideal for reducing query payload size before sending to APIs or embedding in application code.

使い方

1. Paste or type your SQL query into the input field.
2. The minified output appears automatically in real time.
3. Review the size statistics showing original vs minified size and savings percentage.
4. Copy the result to your clipboard or download it as a .sql file.

特徴

Comment removal – Strips single-line (– and #) and multi-line (/* */) SQL comments
Whitespace collapsing – Reduces all consecutive whitespace to single spaces
String-safe parsing – Preserves single-quoted strings, double-quoted identifiers, and backtick-quoted MySQL identifiers
Punctuation optimization – Removes unnecessary spaces around commas, parentheses, and comparison operators
Size statistics – Shows original and minified sizes with percentage savings
リアルタイム処理 – Minifies automatically as you type with no button click needed

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 よくある質問

Does minifying SQL affect query performance?

No. SQL minification only removes formatting characters like whitespace and comments. The database engine parses and executes the query identically whether it is formatted or minified. The benefit is reduced network transfer size and smaller storage footprint in application code.
Is it safe to minify SQL with string literals containing special characters?

Yes. A proper SQL minifier uses a character-by-character parser that recognizes quoted strings (single quotes, double quotes, and backticks) and skips over their contents. This ensures that spaces, comment-like sequences, and special characters inside strings are preserved exactly as written.
What types of SQL comments can be removed during minification?

SQL supports three comment styles: single-line comments starting with -- (double dash), single-line comments starting with # (MySQL-specific), and multi-line block comments enclosed in /* */. A minifier removes all three while inserting a space to prevent adjacent tokens from merging.
When is SQL minification most useful in practice?

SQL minification is most valuable when queries are transmitted over networks (API calls, microservice communication), embedded in application source code, stored in configuration files, or logged for debugging. Reducing query size lowers bandwidth usage and can make logs more compact and readable.