What is the fastest method you know for debugging SQL queries?

The fastest method for fixing errors in an SQL query is to use interactive tools and debuggers, such as:

• Running the query in an SQL client (e.g., DBeaver, pgAdmin, MySQL Workbench) with syntax highlighting and error messages.
• Using step-by-step execution or EXPLAIN to analyze the query plan.
• Checking the syntax and structure of the query in parts — starting with a simple version, then adding conditions.

Example: if the query doesn't work, try executing it in parts, for example, first only SELECT without JOIN, to localize the error.