Syntax:
BINARY

The BINARY operator casts the string following it to a binary string.
This is an easy way to force a column comparison to be done byte by
byte rather than character by character. This causes the comparison to
be case sensitive even if the column is not defined as BINARY or BLOB.
BINARY also causes trailing spaces to be significant.

URL: http://dev.mysql.com/doc/refman/5.5/en/cast-functions.html

