Ubuntu 12.04 with MySQL 5.5 and PHP 5.4

Did you specify an index name in the indexes property for your entity in your PHP file? In this case, you should have something like:

indexes={@Index(name="IDX_ADDRESS_CITY", columns={"city_id"})}

That should result in the correct SQL being generated. If I modify the above to:

indexes={@Index(columns={"city_id"})}

I also get a migration that has SQL with an auto-generated index name.

Yes I did specify a name, as you can see:

uniqueConstraints:
    UNIQUE_STATE_SLUG:
        columns: slug
indexes:
    IDX_USER_ADDRESS:
        columns: address_id

I don't try do to it using annotations because I choose do use yaml to describe my entities. I will take a look on the source code to see if I can fix it and send a PR.

I already sent this patch to Guilherme Blanco, but I guess he doesn't have time to take a look on it.

I guess my solution it's not ideal, but it solve the problem and can be a base to make a better solution.

Diego Oliveira the fix doesn't seem too nice with the additional boolean flag.

I would rather like to fix the root cause instead of adding this solution.

The issue is tricky, because we cannot just move the index definitions above, they will need the columns, however that directly generates the index in the schema tool. Maybe if the gather join column methods would check if they can add an index already it would work.