Why Am I Getting the \'Field \'display_name\' Doesn\'t Have a Default Value\' Error in MySQL?

MySql: Addressing Field Default Value Errors with ' display_name ' Field

Your encounter with the "Field 'display_name' doesn't have a default value" error during INSERT commands in your native Apache, MySql, and PHP environment warrants a closer investigation.

Understanding the Error

Firstly, it's essential to recognize that MySql's STRICT mode is likely activated. STRICT mode enforces stricter data verification and validation, requiring default values for non-NULL columns during INSERT operations. Therefore, fields that previously allowed empty values in your MAMP environment now trigger this error.

Solving the Issue

To rectify the issue, two approaches are available.

1. Disabling STRICT Mode

• Execute the SQL command: SET GLOBAL sql_mode='';
• This deactivates STRICT mode, allowing INSERT commands without default values.

2. Modifying my.cnf

• Edit your my.cnf configuration file and locate the sql_mode setting.
• Ensure that STRICT_ALL_TABLES or any variation of STRICT mode is not set.
• For example, change sql_mode='STRICT_ALL_TABLES' to sql_mode='', or simply remove the sql_mode setting.

Once either of these solutions is implemented, INSERT commands should execute successfully without encountering the default value error for the ' display_name ' field.

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