Right... Good call. In that case, the sales table should have a default for the department id field set to 0, and then the unknown row would have an ID of 0

Because id cannot be null in table departments (cause PK), then no values will be provided for result.

If the db is built properly, the departments table would have a null row that would have the name "Unknown"

From a mathematical standpoint, returning zero is not that bad. Only if the calculation really was wrong you should throw an error (inserting letters for example)

fair enough :

@renjia93 , I hereby register my opinion that it's wierd to expect 0 in above case.

just an opinion of course :)

Hey.

We expect 0 in this case because that was the challenge set by @renjia93 for this kumite. Namely

"if no positive number in array, return 0."

  it("test3", function(){
    var list = [null, -2];
    Test.assertEquals(getMin(list), 0, "test fails");
  });

why do we expect 0 in this case?