Disable ONLY_FULL_GROUP_BY
Solution 1: Remove ONLY_FULL_GROUP_BY from mysql console
Solusi 3: (Permanent) mengikuti pada point.2 lalu melakukan editing pada file my.cnf
SET GLOBAL sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));Solution 2: Remove ONLY_FULL_GROUP_BY from phpmyadmin
- Open phpmyadmin & select localhost
- Click on menu Variables & scroll down for sql mode
- Click on edit button to change the values & remove ONLY_FULL_GROUP_BY & click on save

[mysqld] # ... other stuff will probably be here sql_mode = "STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"