MYSQL : default value in TEXT or BLOB

I need to set a default value for texts fields  that are longer than 255 chars

I tried BLOB and TEXT and got a message:

"BLOB 'mailContent' cannot have a default value"

How can I achieve this ?
regards

Solution: MYSQL : default value in TEXT or BLOB

In text and in varchar you can not have default value and in varchar you have a 255 chars limit.

So you have to do a trick independed on what you programming.For example to give to a hidden label a default value that you will store to the field if a user does not type anything in the specific field.
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