sql - MS Access Selecting Distinct Records -
i using ms access 2010:
i working on calendar , show unique events types each day.. can help me out wit this..
this table looks
events
- event_id (pk) - event_type_id (fk) - event_name - event_date
this data:
1, 1, test event 0, 06/06/2014 2, 1, test event 1, 06/06/2014 3, 1, test event 2, 06/07/2014 4, 2, test event 3, 06/07/2014 5, 3, test event 4, 06/09/2014
i need query homecoming 1 event of each type each each date..
you can clever where
clause:
select e.* events e not exists (select 1 events e2 e2.event_date = e.event_date , e2.event_type_id = e.event_type_id , e2.event_id > e.event_id );
this homecoming rows largest event id on each date each type.
sql ms-access-2010
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