貼上 SQL 查詢並執行快速語法檢查 — 檢查引號和括號是否匹配、是否有多餘逗號以及語句結構是否合理。這是快速檢查工具，並非完整的 MySQL 解析器或查詢執行器。不連接資料庫，您的 SQL 不會離開瀏覽器。
此工具在瀏覽器中執行快速結構性語法檢查：單引號、雙引號和反引號是否匹配；括號是否匹配；FROM、) 或語句結尾前是否有多餘逗號；查詢是否以已知關鍵字開頭；是否缺少結尾分號（顯示為警告）。不理解完整的 MySQL 語法，不驗證資料表名或欄位名，也不執行任何操作。不連接資料庫，您的 SQL 將保留在此頁面上。
Writing MySQL by hand is easy to get slightly wrong — a missing closing parenthesis, a trailing comma before FROM, an unclosed quote inside a string literal. These mistakes usually don't show up until you run the query against a real server, and by then you've lost the context of what you were editing. MySQL Syntax Check catches this class of error immediately, in your browser, by scanning the query text for structural problems before you ever open a database client.
The checker looks at the shape of the statement rather than trying to fully parse MySQL's grammar: it verifies that single quotes, double quotes, and parentheses are balanced and correctly nested, flags trailing commas left behind after reordering columns or conditions, and confirms the statement has a recognizable shape (SELECT, INSERT, UPDATE, DELETE, and similar). Because it's a syntax sanity check rather than a query executor, it never opens a connection to any database — there's nothing to configure, no credentials to enter, and no risk of accidentally running a query against production data.
This makes it a fast first pass before pasting a query into a migration script, a stored procedure, or a code review: run it on a rough draft to catch copy-paste mistakes — like a comma left after removing the last column in a SELECT list — before the query reaches an environment where a typo means a failed deploy or a confusing database error message.
Validate the structural syntax of a MySQL statement directly in your browser before running it against a database.
Paste or type the MySQL statement you want to check into the input box.
Trigger the syntax check so the tool scans the statement for balanced quotes, matched parentheses, and a valid overall statement shape.
Look at the results for any reported problems, such as an unclosed quote, a mismatched parenthesis, or a trailing comma.
Edit the statement directly in the input box to resolve each issue the checker points out.
Run the check again after edits to confirm the statement now passes the structural checks.
Once the query checks out, copy it into your MySQL client, script, or application code with confidence in its basic structure.