SELECT list is not in GROUP BY clause and contains nonaggregated column … incompatible with sql_mode=only_full_group_by

Question

AM using MySQL 5.7.13 on my windows PC with WAMP Server

Here my Problem is While executing this query

SELECT *
FROM `tbl_customer_pod_uploads`
WHERE          


        

Answer 1

Search for "SQL mode" if you are using PhpMyAdmin and take off the value: ONLY_FULL_GROUP_BY, just did and it okay.

Answer 2

Turn off only_full_group_by only if you know what you're doing!

A simple example to demonstrate the issue:

Table: users

 id   |  name
----------------
  1      ali
  2      john
  3      ali

When you use GROUP BY on name column:

SELECT * FROM users GROUP BY name;

There are two possible results:

  1      ali
  2      john     

OR

  2      john
  3      ali

MYSQL does not know what result to choose! Because there are different ids but both have name=ali.

Solution1:

only selecting the name field:

SELECT name FROM users GROUP BY name;

result:

  ali
  john     

Solution2:

Turning off only_full_group_by. MYSQL will show you one of the two possible results I showed earlier RANDOMLY!! (It's ok if you do not really care what id it will choose)

Solution3

Use an Aggregate function like MIN(), MAX() to help MYSQL to decide what it must choose.

for example I want the minimum id:

SELECT MIN(id), name FROM users GROUP BY name;

result:

  1      ali
  2      john     

It will choose the ali row which has the minimum id.

Answer 3

Update for MySQL 8.0

Your sql-mode will not have NO_AUTO_CREATE_USER as it has been removed as mentioned here - how-to-set-sql-mode-in-my-cnf-in-mysql-8

[mysqld]
sql-mode = "STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION"

Also if someone doesn't have a my.cnf file then they create a new one in /etc/my.cnf and then add the above lines.

Answer 4

Below method solved my problem:

In ubuntu

Type: sudo vi /etc/mysql/my.cnf

type A to enter insert mode

In the last line paste below two line code:

[mysqld]
sql_mode = STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

Type esc to exit input mode

Type :wq to save and close vim.

Type sudo service mysql restart to restart MySQL.

Answer 5

In your my.ini, write this:

[mysqld]
sql_mode = "STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

depend on your version. Or:

[mysqld]
sql_mode = ""

or simply remove this: ONLY_FULL_GROUP_BY

Answer 6

Use any one solution

(1) PHPMyAdmin

if you are using phpMyAdmin then change the "sql_mode" setting as mentioned in the below screenshot.

Edit "sql mode" variable and remove the "ONLY_FULL_GROUP_BY" text from the value

(2) SQL/Command prompt Run the below command.

SET GLOBAL sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));

(3) Don't use SELECT *

Use relevant column in SELECT query. relevant means columns, which are either coming in "group by" clause or column with the aggregate function (MAX, MIN, SUM, COUNT etc)

---

Important note

Changes made by using point(1) OR point(2) will not set it PERMANENTLY, and it will revert after every restart.

So you should set this in your config file (e.g. /etc/mysql/my.cnf in the [mysqld] section), so that the changes remain in effect after MySQL restart:

Config File: /etc/mysql/my.cnf

Variable name : sql_mode OR sql-mode