note 74861 added to ref.mysql
| From: | HalitYE�İLmail | Date: | Tue, 01 May 2007 08:02:45 +0000 |
| Subject: | note 74861 added to ref.mysql | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-126012@lists.php.net to get a copy of this message | ||
to calculate the students' end of year mark in school data base with one query
SELECT
student.snumber AS 'Student Number',
student.name AS 'First Name',
student.lastname AS 'Last Name',
SUM( smarks.smark ) AS 'Total Mark',
COUNT( * ) AS 'Total Lesson',
(SUM( smarks.smark ) / COUNT( * )) AS 'Marks End Of Year'
FROM
students AS student
LEFT JOIN
smarks
ON
smarks.student_id = student.id
LEFT JOIN
lessons AS lesson
ON
lesson.lesson_id = smarks.lesson_id
GROUP BY
student.snumber
ORDER BY
'Marks End Of Year' DESC
http://www.mysqlturkiye.org to check Turkish examples,take
a look at this adress
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Server IP: 85.111.6.23
Probable Submitter: 144.122.180.150
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Manual Page -- http://www.php.net/manual/en/ref.mysql.php
Edit -- https://master.php.net/note/edit/74861
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Del: useless -- https://master.php.net/note/delete/74861/useless
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Del: non-english -- https://master.php.net/note/delete/74861/non-english
Del: in docs -- https://master.php.net/note/delete/74861/in+docs
Del: other reasons-- https://master.php.net/note/delete/74861
Reject -- https://master.php.net/note/reject/74861
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