如何确保SqLite中的只读事务？

Question

I have public interface which allows people to interact with the database by typing in sql commands. However, I do not want them to change the database in any way (and if possible, not access certain tables). As I understand though, SQLite has no concept of users, so how do I accomplish this?

Answer 1

如果查询中没有应用程序定义的sql函数，这些函数会间接修改数据库（例如： SELECT eval('DELETE FROM t1') FROM t2; ），则使用sqlite3_stmt_readonly来确定准备好的sql语句是否写入数据库，否则您将可以尝试打开其他read_only ，数据库连接handler(SQLITE_OPEN_READONLY)将被用于read_only访问。

Answer 2

Copy the "master" database file first and open that :-) No, really, this is a serious suggestion.

Otherwise, depending on how SQLite is accessed, the SQLITE_OPEN_READONLY flag that can be passed to sqlite3_open_v2 . This applies to the entire connection -- and all transactions on that connection.

Another option is to limit the SQL entry, but this is very very hard to do correctly and thus I don't recommend this route.

Happy coding.