How to SELECT DISTINCT day from a date with a JOIN
===

I'm looking to only return one day -- so if there were 2 events on the same day, it will only return one of the events. Which event is chosen is arbitrary. The query which I thought would work is:

    SELECT DISTINCT day(events.event_start_date),events.event_id
    FROM scheduled_events
    JOIN events ON (
    scheduled_events.event_id = events.event_id
    )
    WHERE scheduled_events.user_id = 123
    AND MONTH( events.event_start_date ) = 06
    AND YEAR( events.event_start_date ) = 2012

**Table: events**

    +------------+--------------------+
    |  event_id  |  event_start_date  |
    +------------+--------------------+
    |     1      |     2012-06-06     |
    |     2      |     2012-06-06     |
    |     3      |     2012-06-07     |
    +------------|--------------------|

**Table: scheduled_events**

    +------------+-----------+
    |  event_id  |  user_id  |
    +------------+-----------+
    |     1      |    123    |
    |     2      |    123    |
    |     3      |    123    |
    +------------|-----------|

I would want the query to return events with id 3 and (1 **or** 2).