MySQL - TEXT vs CHAR and VARCHAR

Reading this question, a doubt popped into my head:

• char and varchar can store up to 255 chars
• text can store up to 65k chars
• char size in bytes is number of chars
• varchar size in bytes is number of chars used + 1

So how much bytes does TEXT actually occupy? ~65KB or number of chars used + 开发者_StackOverflow1?

TEXT is a variable length datatype, with a maximum of 65,000 characters.

LONGTEXT can be used for over 4 trillion characters.

To answer your question: it's a variable lenght, and it will only occupy the amount of characters you store.

TEXT occupies a number actual length of your data + 2 bytes.