在使用“数据库/ SQL”时如何防止Go中的SQL注入攻击？

Question

Building my first web-app and want to understand SQL injection better (https://github.com/astaxie/build-web-application-with-golang/blob/master/en/eBook/09.4.md).

How much protection against SQL injection do I get from just always using the 'database/sql' library and constructing queries using '?' instead of concatting strings? What kind of SQL injection attacks will I still have to worry about in that case?

Answer 1

As long as you're using Prepare or Query, you're safe.

// this is safe
db.Query("SELECT name FROM users WHERE age=?", req.FormValue("age"))
// this allows sql injection.
db.Query("SELECT name FROM users WHERE age=" + req.FormValue("age"))