Full text search vs LIKE

Question

My question is about using fulltext.As I know like queries which begin with % never use index :

SELECT * from customer where name like %username%

Answer 1

You have to understand how index is working. Index is the very same like the dead-wood edition of encyclopedia.

If you use:

SELECT * from customer where name like username%

The index, in fulltext or no fulltext should work. but

SELECT * from customer where name like %username%

will never work with index. and it will be time-consuming query.