Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_9 ( points INTEGER, year VARCHAR, engine VARCHAR, entrant VARCHAR )

### Question ###
What is the greatest point of an Entrant of connaught engineering alta straight-4 engine before 1957

### Accurate SQL ###

SELECT MAX(points) FROM table_name_9 WHERE engine = "alta straight-4" AND entrant = "connaught engineering" AND year < 1957