in MySQL, BLOBS should specify a length/number of bytes for fields in index

The test EnumIdTest.testEnumAsId fails with the following message, when creating the tables:

create table PlanetCheatSheet (planet tinyblob not null, mass double precision not null, numberOfInhabitants bigint not null, radius double precision not null, primary key (planet)) ENGINE=InnoDB
Unsuccessful: create table PlanetCheatSheet (planet tinyblob not null, mass double precision not null, numberOfInhabitants bigint not null, radius double precision not null, primary key (planet)) ENGINE=InnoDB
BLOB/TEXT column 'planet' used in key specification without a key length

Relevant MySQL documentation:
#BLOB and TEXT columns also can be indexed, but a prefix length must be given.

http://dev.mysql.com/doc/refman/5.0/en/create-index.html