Why Do I Get \'Field \'display_name\' Doesn\'t Have a Default Value\' Error During MySQL INSERT Commands?

MySql Error: Resolving Field Default Value Issues for INSERT Commands

When encountering an error like "Field 'display_name' doesn't have a default value" upon attempting INSERT commands in MySql, it's important to understand the underlying cause. This error typically occurs when fields in the target table lack default values, resulting in a violation of SQL's rules for inserting data.

Upon migrating from MAMP to a native Apache, MySql, and PHP setup, you may face this issue if MySql is set to STRICT mode. In STRICT mode, the database server enforces more stringent rules, including mandating default values for all non-NULL fields during insertion operations.

To resolve this error, you can disable STRICT mode using the following SQL command:

SET GLOBAL sql_mode=''

Alternatively, you can edit the my.cnf configuration file and ensure that STRICT_ALL_TABLES (or similar strict mode settings) is not enabled. Once you've disabled STRICT mode or added a default value to the affected field, you should be able to successfully perform INSERT commands without encountering the mentioned error.

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