Question

I have a table in mysql which is not normalized and I need to query so that it groups by a certain field and gives the most recent row.

For example the table looks like

callername | callerdate | incoming | status

And I am trying to get all of the records which have their most recent status as NotAnswered and I can’t figure out how you would do this, I can GROUP BY callername however I can’t figure out how to get the most recent values.

Thanks.

Answer 1

SELECT
  yourTable.*
FROM 
  yourTable
INNER JOIN
(
  SELECT
    callername,
    MAX(callerdate) AS callerdate
  FROM
    yourTable
  GROUP BY
    calledname
)
  AS mostRecent
    ON  mostRecent.callername = yourTable.callername
    AND mostRecent.callerdate = yourTable.callerdate
WHERE
  yourTable.status='NotAnswered'