NULL value in field

is there any method to check whether user input a NULL value in field or it is default NULL set for field in mysql after update trigger
M. AhsanAsked:
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kenfcampCommented:
No.

If you're using default content for the field, I would recommend changing it to something that a user wouldn't possibly use.
Example: what are the odds of someone using "null-ignore"

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Ryan ChongBusiness Systems Analyst , ex-Senior Application EngineerCommented:
is there any method to check whether user input a NULL value in field or it is default NULL set for field in mysql after update trigger
perhaps you need to have another audit table to log the changes, or as what @kenfcamp had suggested, use another "default value" rather than NULL so that the changes to the value can be identified.
Ryan ChongBusiness Systems Analyst , ex-Senior Application EngineerCommented:
do you need further assistance here?
Ryan ChongBusiness Systems Analyst , ex-Senior Application EngineerCommented:
as proposed
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MySQL Server

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