Why Can\'t I Set \'0000-00-00 00:00:00\' as the Default Value for a Timestamp Field?

Understanding the Error Message: Invalid Default Value for 'create_date' Timestamp Field

The provided SQL statement attempts to create a table with a timestamp field (create_date) that has a default value of '0000-00-00 00:00:00'. However, the 'NO_ZERO_DATE' SQL mode prohibits the use of this value as a valid date.

Why the Mode Prohibits '0000-00-00 00:00:00'?

This mode enforces stricter date validation rules. It prevents the insertion of dates with zero values, such as '0000-00-00', which can lead to inconsistencies and errors in data analysis.

How to Resolve the Error?

To resolve the error, you have two options:

1. Modify the Default Value: Set a valid timestamp value (other than '0000-00-00 00:00:00') as the default for the create_date field.

2. Disable the NO_ZERO_DATE Mode:

   <code class="sql">SET SQL_MODE=(SELECT REPLACE(@@SQL_MODE, 'NO_ZERO_DATE', ''));</code>

   This will temporarily disable the mode, allowing you to create the table with the '0000-00-00 00:00:00' default value. However, it's important to re-enable the mode afterwards to ensure data integrity.

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