How to disable the ONLY_FULL_GROUP_BY SQL Mode for a single cpanel user
The ONLY_FULL_GROUP_BY
SQL mode is a setting in the MySQL database management system that affects the behavior of GROUP BY
clauses in SQL queries.
When this mode is enabled, the results of a GROUP BY
clause must be based on a complete set of grouped columns. This means that all columns in the SELECT
list not contained in an aggregate function (e.g. SUM
, AVG
, COUNT
) must be included in the GROUP BY
clause.
If ONLY_FULL_GROUP_BY
is disabled, MySQL will allow non-aggregate columns in the SELECT
list that are not part of the GROUP BY
clause, and will return arbitrary values for those columns.
This behavior can lead to incorrect results, so it is generally recommended to keep ONLY_FULL_GROUP_BY
enabled to catch mistakes and improve the quality of your database queries.
Is it a good practice to disable MYSQL SQL_MODE ONLY_FULL_GROUP_BY?
Whether to disable the ONLY_FULL_GROUP_BY
SQL mode depends on the requirements and restrictions of your database system. Here are some points to consider:
- Enabling
ONLY_FULL_GROUP_BY
ensures that the results of aGROUP BY
clause are based on a complete set of grouped columns and eliminates any unexpected or incorrect results. - Disabling
ONLY_FULL_GROUP_BY
can be necessary for compatibility with older database systems that may have used non-standardGROUP BY
behavior. - In general, it is a good practice to keep
ONLY_FULL_GROUP_BY
enabled, as it helps to catch mistakes and improve the quality of your database queries. - However, if you need to use a specific database query that would not work with
ONLY_FULL_GROUP_BY
enabled, you may need to temporarily disable the mode.
to disable the ONLY_FULL_GROUP_BY
mode for a single cPanel user.
it is possible to disable the ONLY_FULL_GROUP_BY
mode for a single cPanel user.
Here’s how you can disable the ONLY_FULL_GROUP_BY
mode for a single cPanel user from WHM:
- Log in to WHM as a root user.
- Go to the “SQL Services” section.
- Click the “MySQL Configuration Editor” link.
- In the “Configuration File” section, select the “my.cnf” file.
- In the “Section” section, select the “mysqld” option.
- Scroll down to the “Directives” section and find the “sql_mode” directive.
- Change the value of the “sql_mode” directive to exclude
ONLY_FULL_GROUP_BY
. For example, if the value issql_mode = "ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES"
, change it tosql_mode = "STRICT_TRANS_TABLES"
. - Click the “Save” button to save the changes.
- Restart the MySQL service to apply the changes.
After following these steps, the ONLY_FULL_GROUP_BY
mode will be disabled for all cPanel users. To restrict the changes to a single cPanel user, you will need to create a separate MySQL instance for that user with a modified my.cnf
file.