MySQL minimum CHAR storage for constant strings -

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i have simple table has 2 values: id , type. longest string in type 11 characters ("directorate").

should using char(11) or char(12) in create command? mysql store 12 bytes char(11) 12th byte null character or not relevant storage?

edit: joni pointed out, not use 11 or 12 bytes, uses 33 or 36 bytes because storing utf-8. however, question if should using 11 or 12 in char(x)

the storage required char(m)

m × w bytes, 0 <= m <= 255, w number of bytes required maximum-length character in character set.

(source: https://dev.mysql.com/doc/refman/5.6/en/storage-requirements.html)

that is, if use ascii or other single byte encoding, char(m) stored in m bytes. if use utf8 stored in 3*m bytes.


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