Comment faire de la valeur en ordre croissant dans la MySQL?
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12-12-2019 - |
Question
Je veux ce type de sortie pour récupérer Task_Name à partir de la base de données comme dans ce format
Task 10 Task 2 Task 3 Task 5........
ma requête est
SELECT task_name, section_name, ref_student_id
FROM scores
WHERE ref_student_id = '".$studentid."'
AND section_name = 'sm1'
GROUP BY task_name
donc je veux sortir comme ça ..
Task 2 Task 3 Task 5 Task 10........
La solution
Utilisez ceci
"SELECT task_name, section_name, ref_student_id
FROM scores
WHERE ref_student_id = '1'
AND section_name = 'sm1'
GROUP BY task_name
ORDER BY cast( SUBSTRING( task_name, 5 ) AS unsigned ) ASC"
Autres conseils
"select task_name,section_name,ref_student_id from scores where ref_student_id = '".$studentid."' and section_name = 'sm1' GROUP BY task_name order by task_name ASC "
ordre en ascendant
use this
SELECT task_name, section_name, ref_student_id
FROM scores
WHERE ref_student_id = '".$studentid."'
AND section_name = 'sm1'
ORDER BY ltrim(task_name) ASC //order by should come for ordering....
GROUP BY task_name
instead of
SELECT task_name, section_name, ref_student_id
FROM scores
WHERE ref_student_id = '".$studentid."'
AND section_name = 'sm1'
GROUP BY task_name
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