MySQL Syntax Checker

Check the syntax of MySQL queries

Features

Instantly detect syntax mistakes

Instantly parse the grammar of the entered MySQL query and point out errors

Pinpoint the error location by line

Indicate where a syntax error occurs with a line number to aid fixing

Validate syntax without a DB connection

Safely check only the query grammar without connecting to a real database

Check behavior with samples

Load valid and error example queries with one click to grasp the behavior

How to Use

Enter the SQL query

Write the MySQL query you want to syntax-check in the input field; sample loading is also available

Run with one click

Press the check button or use Ctrl/Cmd+Enter to run the syntax analysis

Check the result and errors

See either the no-error display or, when there is an error, the relevant line and details in a list

Use Cases

Prevent mistakes before running

Find query grammar mistakes before running on the production DB to avoid risk

Check while learning SQL

Verify on the spot whether a query you wrote while learning is grammatically correct

Inspect long queries

Find omissions and syntax breaks in complex, long queries line by line

Self-check before review

Check in advance for syntax errors before submission or requesting a review

Basic Knowledge

What Syntax Check Can and Cannot Detect

Syntax check is an inspection that finds grammatical errors in SQL (such as misspellings, missing commas, or missing parentheses) without executing the query. It cannot determine whether tables or columns actually exist or whether results match your intent, so it is used as a preliminary check before execution.

What Are MySQL Dialects

Although SQL has a standard specification, the syntax that can be written varies slightly depending on the database product. MySQL has dialects such as the ability to enclose identifiers in backticks (`), the availability of the LIMIT clause, and SQL from other products may not run as-is.