代码报错：You can't specify target table 'Person' for update in FROM clause. chatgpt给的解释: 是的，MySQL不允许在同一个查询中直接更新 ...

To perform Create, Read, Update, and Delete operations on data through a robust and intuitive. To perform Create, Read, Update, and Delete operations on data through a robust and intuitive. • ...

I'm working on a web app, and it part of it, there is a very simple database-driven file/document manager. As a file manager, there is the possibility of sub-folders. So in the DB, I have the ...