VARBINARY
VARBINARY(width) [CHARACTER SETcharacter_set] [COLLATEcollation]
This data type stores data as binary strings, not as
character strings like VARCHAR. The width given is
for the maximum width in bytes—this value must be specified. If you
want to use a character set for the column other than the default for
the table, you can give one for the column. Values are sorted based on
the collation of the character set for the column. This data type
replaces VARCHAR BINARY. Before version 4.1.2 of
MySQL, if you added the BINARY flag after
VARCHAR, it instructed MySQL to treat the values as
byte strings for sorting and comparing. All elements of the expression
are then treated as binary.