sql - MySQL - Order by values in separate table -
i have 2 mysql tables. table1:
id name otherid
table2:
id otherid time
in each table, "id" unique identifier every row (and primary key) "otherids" correspond between tables. there may several (or 0) rows in table2 have otherid corresponds 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 looking fetch every row in table1, ordered recent time of rows in table2 go according otherid. in example, result looking for:
id name time 2 joe 2014-03-12 023:38:59 1 bob 2013-02-11 22:05:21
this because joe has recent time table2.
see below illustration :
select table1.*, max(table2.time) table1 inner bring together table2 on table1.otherid = table2.otherid grouping table2.otherid order table2.id
see sqlfiddle demo
mysql sql aggregate-functions greatest-n-per-group
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