How to pivot my table in mysql - mysql

Question

I have table database like this :
i want to make on table view like this :
Thanks.

Answer 1

I assume you need it per year basis.
Select year, id_lesson,
Sum(case when term = 1 then exam_1 end) exam_1_term_1,
Sum(case when term = 1 then exam_2 end) exam_2_term_1,
Sum(case when term = 2 then exam_1 end) exam_1_term_2,
Sum(case when term = 2 then exam_2 end) exam_2_term_2,
Sum(case when term = 3 then exam_1 end) exam_1_term_3,
Sum(case when term = 3 then exam_2 end) exam_2_term_3
From your_table
Group by id_lesson, year;

Answer 2

Try this logic, Hope it is help.
$qdata = mysqli_query("SELECT * FROM table ORDER BY ID_Lesson");
$rows = array();
if (mysqli_num_rows($qdata) > 0) {
// Store all exam based on ID_Lesson ar array
while ($data = mysqli_fetch_array($qdata)) {
if (!isset($row[$data['ID_Lesson']])) {
$rows[$data['ID_Lesson']] = array($data['ID_Lesson'], $data['Exam1'], $data['Exam2']);
}
else {
$rows[$data['ID_Lesson']][] = $data['Exam1'];
$rows[$data['ID_Lesson']][] = $data['Exam2'];
}
}
$html = '';
// Print per element as <tr> row
foreach ($rows as $k => $row) {
$html .= "<tr><td>" . implode("</td><td>", $row) . "</td></tr>";
}
}