So basically you want to insert into database the row if it does not exist just yet. What I would do is have unique index on iso_code column and then have upsert with Ecto that does nothin (or updates all).
So basically you want to insert into database the row if it does not exist just yet. What I would do is have unique index on iso_code column and then have upsert with Ecto that does nothin (or updates all).