Disable ONLY_FULL_GROUP_BY

Question

I accidentally enabled ONLY_FULL_GROUP_BY mode like this:

SET sql_mode = \'ONLY_FULL_GROUP_BY\';

How do I disable it?

Answer 1

Adding only one mode to sql_mode without removing existing ones:

SET sql_mode=(SELECT CONCAT(@@sql_mode,',<mode_to_add>'));

Removing only a specific mode from sql_mode without removing others:

SET sql_mode=(SELECT REPLACE(@@sql_mode,'<mode_to_remove>',''));

In your case, if you want to remove only ONLY_FULL_GROUP_BY mode, then use below command:

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

Reference: http://johnemb.blogspot.com/2014/09/adding-or-removing-individual-sql-modes.html

Answer 2

I have noticed that @Eyo Okon Eyo solution works as long as MySQL server is not restarted, then defaults settings are restored. Here is a permanent solution that worked for me:

To remove particular SQL mode (in this case ONLY_FULL_GROUP_BY), find the current SQL mode:

SELECT @@GLOBAL.sql_mode;

copy the result and remove from it what you don't need (ONLY_FULL_GROUP_BY)

e.g.:

ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

to

STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

create and open this file:

/etc/mysql/conf.d/disable_strict_mode.cnf

and write and past into it your new SQL mode:

[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

restart MySQL:

sudo service mysql restart

Or you can use ANY_VALUE() to suppress ONLY_FULL_GROUP_BY value rejection, you can read more about it here

Answer 3

One important thing to note, if you have ANSI on sql_mode:

Equivalent to REAL_AS_FLOAT, PIPES_AS_CONCAT, ANSI_QUOTES, IGNORE_SPACE, and (as of MySQL 5.7.5) ONLY_FULL_GROUP_BY.

See https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html#sqlmode_ansi

Answer 4

Here is my solution changing the Mysql configuration through the phpmyadmin dashboard:

In order to fix "this is incompatible with sql_mode=only_full_group_by": Open phpmyadmin and goto Home Page and select 'Variables' submenu. Scroll down to find sql mode. Edit sql mode and remove 'ONLY_FULL_GROUP_BY' Save it.

Answer 5

Update:

To keep your current mysql settings and disable ONLY_FULL_GROUP_BY I suggest to visit your phpmyadmin or whatever client you are using and type:

SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY','') copy_me

next copy result to your my.ini file.

mint: sudo nano /etc/mysql/my.cnf

ubuntu 16 and up: sudo nano /etc/mysql/my.cnf

ubuntu 14-16: /etc/mysql/mysql.conf.d/mysqld.cnf

Caution! copy_me result can contain a long text which might be trimmed by default. Make sure you copy whole text!

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old answer:

If you want to disable permanently error "Expression #N of SELECT list is not in GROUP BY clause and contains nonaggregated column 'db.table.COL' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by" do those steps:

1. sudo nano /etc/mysql/my.cnf

2. Add this to the end of the file

   [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"
   

3. sudo service mysql restart to restart MySQL

This will disable ONLY_FULL_GROUP_BY for ALL users

Answer 6

If you are using MySQL 8.0.11 so, you need to remove the ’NO_AUTO_CREATE_USER‘ from sql-mode.

Add following line in file /etc/mysql/my.cnf and [mysqld] header

[mysqld]

sql_mode = STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION