So when I define an association in rails do I have to set the foreign key as an index in the database?
My friend told me to do this to improve performance, but he is a PHP programmer.
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So when I define an association in rails do I have to set the foreign key as an index in the database?
My friend told me to do this to improve performance, but he is a PHP programmer.
Yes your friend is correct it will help the database get the answer for your query faster