When I checked the plugins below, they perform similar functions to yours. Your plugin's user interface is really excellent. However, I think it's slightly lacking in detecting SQL injection payloads and various database errors compared to the plugins below. Overall, the plugin could be improved to better anticipate potential false positives. I use this plugin a lot, I just wanted to offer suggestions for improvement.
https://github.com/saoshao/DetSql
https://github.com/darkfiv/DouSql