sql - how to use like function in MySQL or run LIKE command in mysql when search need to more specific -

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i want search in database how person have name 'i steven'

i want search on user table 3 column

firstname secondname lastname

i want sorting them first name match comes first secondname latter , lastname last when see result.

are command in mysql solve puzzle

select  if (firstname    'i steven%', 4,   if(secondname  'i steven%', 2,     if (lastname 'i steven%', 1, 0)   ) ) first_name_first   user    firstname  'i steven%' or   secondname 'i steven%' or   lastname   'i steven%' order first_name_first desc;

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