Question

I have two MySQL tables.
Table1:

id name otherid

Table2:

id otherid time

In each table, the “id” is a unique identifier for every row (and is also the primary key)
the “otherids” correspond between tables. There may be several (or 0) rows in table2 that have an otherid that corresponds to an otherid in table1. Table

For example,
Table 1:

id name otherid
1  bob  24
2  joe  326

Table 2:

id otherid time
4  326     2014-03-12 023:38:59
5  24      2013-02-11 22:05:21
6  24      2013-02-10 13:27:58

I am looking to fetch every row in table1, ordered by the most recent time of the rows in table2 that go with it according to the otherid.
In my example, this is the result I would be looking for:

id name time
2  joe  2014-03-12 023:38:59
1  bob  2013-02-11 22:05:21

This is because Joe has the most recent time from table2.

Answer 1

See below example :

SELECT table1.*, max(table2.time) 
FROM table1 
INNER JOIN table2 ON table1.otherid = table2.otherid
GROUP BY table2.otherid
ORDER BY table2.id

See SqlFiddle Demo