From what do sql parameters protect you?

Question

Parameters are used to protect you from malicious user input.

But if the parameter expects a string, is it possible to write input that will be interpreted as sql, s

Answer 1

Parameterized queries generally quote the parameter if it is a string behind the scene so that the normal SQL operators are not interpreted as such. This means that even if a user enters potentially malicious data it is simply treated as a string input and not interpreted as SQL operators/commands.

There may be technical differences in how it is implemented in the various frameworks, but the basic idea (and result) is the same.