Result of query 1:
Array
(
    [0] => Array
        (
            [dtFirstName] => Mickey
            [dtLastName] => Mouse
        )

    [1] => Array
        (
            [dtFirstName] => Donald
            [dtLastName] => Duck
        )

)
Result of query 2:
Array
(
    [0] => Array
        (
            [idT1] => 1
            [dtFirstName] => Mickey
            [dtLastName] => Mouse
            [dtBirthDate] => 1927-07-03
            [dtCreationTimestamp] => 2018-03-12 08:42:02
            [dtAverage] => 23.45
            [dtNumberOfGrades] => 15
            [dtModules] => HTSTA,CLISS1,CLISS2
        )

)