Is SQL injection 4 characters long or less possible?

Question

SQL

Is SQL injection 4 characters long or less possible?
If yes, can you write an example?

Answer 1

sql injection is the very fact that you can influence queries to the database. and it is deeply indifferent how many characters there are, this will not stop being a problem.
but for example

select count(id)>1 from auth.users where login='admin';--' and hash=123;

Answer 2

%'--
For a stupidly templated request like this:

"SELECT * FROM projects WHERE title LIKE '"+ variable_from_client + "' AND owner_id=13"