Question

Lets say I have a table with some data like the following:

ID     text     OtherID
_______________________
6     text1       24
7     text2       24
8     text3       24
9     text1       25
10    text2       25

As you can see I have multiple entries with the same OtherID. what would be an sql statement that would select only the newest ID from all of the entries with the same OtherID. this is being done in MySQL if that matters.

for example I want it to output:

ID     text     OtherID
_______________________
8      text3       24
10     text2       25

Answer 1

Use:

SELECT DISTINCT
       x.id,
       x.text,
       x.otherid
  FROM TABLE x
  JOIN (SELECT t.otherid,
               MAX(t.id) 'max_id'
          FROM TABLE t
      GROUP BY t.otherid) y ON y.otherid = x.otherid
                           AND y.max_id = x.id