MySQL binary version 4

MySQL in particular, 4 before the Chinese search will have inaccurate questions, you can add binary when retrieving

Binary property indicates binary storage
In MySQL, there are two types of storage that are "text" and "binary", the main difference being that the former is not case-sensitive and the latter distinguishes

Name varchar (() BINARY not NULL default ', if the table is already built, use:
ALTER TABLE table modify column varchar binary; To the properties of the table.

MySQL binary version 4