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

You will not be able to make it faster with LIKE just like everyone says (about the % at the beginning), but you can improve it a little by joining after you filter your people first.

SELECT *
  FROM (SELECT * 
          FROM `phppos_customers`
         WHERE `deleted` = 0
           AND  `email`  LIKE '%f%') `t_customers`
  JOIN `phppos_people` ON `t_customers`.`person_id`=`phppos_people`.`person_id`
 ORDER BY `email` asc