Mysql blob Data truncation: Data too long for column
Use following data types as per your need
TINYBLOB : maximum length of 255 bytes
BLOB : maximum length of 65,535 bytes
MEDIUMBLOB : maximum length of 16,777,215 bytes
LONGBLOB : maximum length of 4,294,967,295 bytes
参考:
http://stackoverflow.com/questions/21522875/data-truncation-data-too-long-for-column-logo-at-row-1