Error in SQL statement using GROUP by

Question

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I'm trying to GROUP BY in a SQL statement using Query Builder in VS 2015, but it's not working... Can you please tell me what's wrong? Thank you! :)

What I have tried:

SQL

SELECT students_details.class AS Class, students.name AS Name, students.guardian AS Gurdian, students.phone AS Phone, students.mobile AS Mobile
FROM students_det INNER JOIN students ON students_details.studentID = students.studentID
ORDER BY Class
GROUP BY Class

Posted 11-Oct-16 20:41pm

JC Carmo

Updated 11-Oct-16 20:48pm

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Herman<T>.Instance 12-Oct-16 2:43am

ORDER BY is allways the last sentence of a query.
See here or here

JC Carmo 12-Oct-16 2:47am

I've already tried putting ORDER BY in the end, but still doesn't work...

Herman<T>.Instance 12-Oct-16 2:49am

Not working with which error message?

Herman<T>.Instance 12-Oct-16 2:50am

GROUP BY students_details.class

GROUP BY does not working on the alias name

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Suvendu Shekhar Giri · Accepted Answer · 2016-10-11T20:48:00

First of all, GROUP BY should appear before ORDER BY clause. ORDER BY should be the last clause in your SELECT query.

You haven't used any aggregate function for which GROUP BY is required.
If you want to unique records in a result set use DISTINCT clause with ORDER BY if required.

Just remove/ comment out the GROUP BY and it should work fine. You can add a DISTINCT tag if you need.

SQL

SELECT DISTINCT students_details.class AS Class, students.name AS Name, students.guardian AS Gurdian, students.phone AS Phone, students.mobile AS Mobile
FROM students_det INNER JOIN students ON students_details.studentID = students.studentID
--GROUP BY students_details.class, students.name, students.guardian, students.phone, students.mobile
ORDER BY students_details.class

Hope, it helps :)