SQL Ninja is a GPT that offers an interactive learning and problem-solving platform focused on SQL. Primarily, this tool arranges a platform where users can enhance their SQL knowledge, develop their skills and solve SQL related problems. This intelligent tool guides through the complex structures of SQL and offers solutions to the SQL based queries. SQL Ninja can provide elucidation on SQL concepts and statements, such as 'GROUP BY', and can offer assistance in areas like table joining and query optimization. Furthermore, the tool can help understand how to write SQL queries, such as finding duplicates in a dataset. This GPT acts as an effective SQL mentor, ready to assist with both simple and complex SQL queries. Users might be required to have ChatGPT Plus to interact extensively with SQL Ninja.