MySQL won't start after changin my.cf

Question

I'm working on a website and I'm getting this MySQL error:

"(...) this is incompatible with sql_mode=only_full_group_by (...)"

I've looked for an answer and I realized I had to change the sql_mode of my MySQL. So I've added the following line to /etc/mysql/my.cnf:

sql_mode="STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

But now when I executed sudo service mysql restart it takes a really long time and then shows this message:

Job for mysql.service failed because the control process exited with error code. See "systemctl status mysql.service" and "journalctl -xe" for details.

So now I removed that line and I have to execute the command by hand everytime I boot my PC.

Can anyone help me?

Answer 1

我没有更改文件/etc/mysql/my.cnf ，而是应用了/etc/mysql/mysql.conf.d/mysqld.cnf文件中的更改，它终于奏效了。

Answer 2

在 my.cnf 中删除 sql 模式并重新启动 mysql 服务，然后执行波纹管查询。

SET GLOBAL sql_mode = "STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION";

Answer 3

If you are editing my.cf directly, you need to remove the quotes.

sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

Referenced here and working for me: https://gist.github.com/cucxabeng/938b55b3e8b8f1bf230edbf043254189