I have a table, students, with 3 columns: id, name, and age. I have a UNIQUE index Index_2 on
students
id
name
age
UNIQUE
Index_2
I know this question is somewhat old now, but what I had to do was remove the primary key on my table and use a regular index, instead. It seems that MySQL doesn't honor utf8_bin's collation in primary keys. I'm using MySQL 5.5.