Print student marksheet in all subjects in mysql in C#

Question

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Hi I have trouble displaying students' grades in one table
The table data is as follows:

CREATE TABLE `tb_marks` (
  `id` int(11) NOT NULL,
  `id_subject` int(11) NOT NULL,
  `code_student` int(11) NOT NULL,
  `round` varchar(50) NOT NULL,
  `mark` varchar(50) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
------------------
INSERT INTO `tb_marks` (`id`, `id_subject`, `code_student`, `round`, `mark`) VALUES
(3, 1, 2, 'first', '45'),
(2, 1, 3, 'first', '45'),
(4, 2, 2, 'first', '46'),
(5, 3, 2, 'first', '0'),
(6, 4, 2, 'first', '84'),
(7, 5, 2, 'first', '77'),
(8, 6, 2, 'first', '65');
---------------------------------
CREATE TABLE `tb_student_old` (
  `id` int(11) NOT NULL,
  `name` varchar(100) NOT NULL,
  `school` varchar(50) NOT NULL,
  `code` int(11) NOT NULL,
  `age` date DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-------------------
INSERT INTO `tb_student_old` (`id`, `name`, `school`, `code`, `age`) VALUES
(1, 'ahmad', 'school', 0, NULL),
(2, 'noor', 'school', 0, NULL),
(3, 'salim', 'school', 0, NULL),
(4, 'emad', 'school', 0, NULL);
------------------------------------------
CREATE TABLE `tb_subject` (
  `id` int(11) NOT NULL,
  `name` varchar(50) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
------------------
INSERT INTO `tb_subject` (`id`, `name`) VALUES
(1, 'islamic'),
(2, 'arabic'),
(3, 'english'),
(4, 'math'),
(5, 'science'),
(6, 'social'),
(7, 'geographically'),
(8, 'date'),
(9, 'national');

I need the query or programming that gives me the table as follows:

SNo Student Name   islamic|arabic|english|math|science|social|geographic|Total
      1    ahmad		88	88	88	88   88	    88	    88	      8888

What I have tried:

SELECT `tb_marks`.`id` , `tb_marks`.`round`, `tb_marks`.`mark` , `tb_subject`.`name` , `tb_student_old`.`name`, `tb_student_old`.`school` FROM `tb_marks` INNER JOIN `tb_subject` ON `tb_subject`.`id` = `id_subject` INNER JOIN `tb_student_old` ON `tb_student_old`.`id` = `code_student` WHERE code_student='2';
But the result was not right:

Posted 4-Nov-18 10:49am

ammarsoftware

Updated 6-Dec-18 10:47am

v3

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2 solutions

Solution 2

Aah, the Pivot Table.

For MySql, you would use the Group_Concat() instruction to do this. The following article demos this functionality along with other RDBMS versions
http://www.artfulsoftware.com/infotree/qrytip.php?id=78[^]

Posted 6-Dec-18 10:47am

MadMyche

Comments

ammarsoftware 7-Dec-18 9:34am

Thank you
You have already tried to use the sentence
But it does not do the trick because it gives random answers:

---------------------
select a.code_student, b.name, group_concat(a.mark SEPARATOR ' ') as student_enrollment from tb_marks a, tb_student_old b where a.code_student = b.id group by a.code_student, b.name

MadMyche 7-Dec-18 9:54am

The data you are inserting into the tables does not correspond to the results you desire; your tb_marks insert neither contains data for Ahmad nor any marks of 88.

ammarsoftware 7-Dec-18 10:55am

you can help me in anydisk?

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Richard MacCutchan · Accepted Answer · 2018-11-04T22:01:00

Solution 1

You need a SELECT statement; see MySQL :: MySQL 8.0 Reference Manual :: 13.2.10 SELECT Syntax[^]

Posted 4-Nov-18 22:01pm

Richard MacCutchan

Comments

ammarsoftware 5-Nov-18 15:08pm

i used the statement :
SELECT `tb_marks`.`id` , `tb_marks`.`round`, `tb_marks`.`mark` , `tb_subject`.`name` , `tb_student_old`.`name`, `tb_student_old`.`school` FROM `tb_marks` INNER JOIN `tb_subject` ON `tb_subject`.`id` = `id_subject` INNER JOIN `tb_student_old` ON `tb_student_old`.`id` = `code_student` WHERE code_student='2';
But the result was not right: