포매터 및 코드
SQL 쿼리 설명기
Format any SQL and explain what each clause does.
Runs in your browser
Formatted
SELECT u.name, COUNT(p.id) AS posts FROM users u LEFT JOIN posts p ON p.author_id = u.id WHERE u.created_at > '2024-01-01' GROUP BY u.id ORDER BY posts DESC LIMIT 10;
What this does
📋 Returns: u.name, COUNT(p.id) AS posts 📂 From: users u LEFT 🔗 LEFT JOIN posts ON p.author_id = u.id 🔍 Filter: u.created_at > '2024-01-01' 📊 Group by: u.id ↕️ Order by: posts DESC 📏 Limit: 10 rows
편집자 노트
Understanding · Read the plan, find the seq-scan, add the index.
이 심층 챕터는 현재 영어로만 제공됩니다. 위의 변환 도구는 귀하의 언어로 작동하지만, 긴 설명 글은 아직 번역되지 않았습니다.
자주 묻는 질문
Quick answers.
›Does this tool execute my query against a database?
No. The tool performs static analysis of the syntax and structure locally in your browser without connecting to any external database.
›Which SQL dialects are supported?
The explainer supports standard ANSI SQL, as well as common variations used in PostgreSQL, MySQL, SQL Server, and SQLite.
›Will it catch errors in my SQL syntax?
Yes. If the query is malformed, the parser will identify the location of the syntax error so you can correct it before running it in production.
›Is my query data sent to a server?
Zero data is transmitted. The logic for formatting and explaining the SQL clauses runs entirely on your device using client-side scripts.
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