Mysql Improve Search Performance with wildcards (%%)

Question

Below is a query I use for searching a person by email

  SELECT *
    FROM phppos_customers
    JOIN phppos_people ON phppos_customers.person_id = phppos_peo         


        

Answer 1

No, Mysql will not use the index because LIKE argument (%f%) starts with the wildcard character %. If it starts with a constant, index will be used.

More info: 7.5.3. How MySQL Uses Indexes