LONGBLOB

A BLOB column with a maximum length of 4,294,967,295 or 4GB (232 - 1)
bytes. Up to MySQL 3.23, the client/server protocol and MyISAM tables
had a limit of 16MB per communication packet or table row. From MySQL
4.0, the maximum allowed length of LONGBLOB columns depends on the
configured maximum packet size in the client/server protocol and
available memory.
