Syntax
------ 
MEDIUMBLOB
 
Description
----------- 
A BLOB column with a maximum
length of 16,777,215 (224 - 1) bytes.
Each MEDIUMBLOB value is stored using a three-byte length
prefix that
indicates the number of bytes in the value. 
 


URL: https://mariadb.com/kb/en/mediumblob/