How to optimize this complicated EAV MYSQL query?

Question

Is it possible to optimize this query I have written

I\'ve created a sort of dynamic virtual database to give my users the ability to add custom fields without affec

Answer 1

Actually, Chibuzo is right. Start by deleting it :-)) But before, play with it a little, it's a good brain excercise, like chess or something :-)

select 
    case_id,
    d_status.data_field_value as case_status,
    d_client1_name.forename_company as client1_forename_company
from db_cases 
        join db_data as d_status 
            on d_status.data_case_id = case_id 
               AND d_status.data_field_name = 'casestatus'
        join db_data as d_client1
            on d_client1.data_case_id = case_id 
               AND d_client1.data_field_name = 'client1'
        join db_names as d_client1_name
            on d_client1_name.name_id = d_client1.data_field_value

I would expect these direct joins without subqueries to be much more efficient, though you'll have to test it - there are often surprises in optimizations.