SQL – How to select a row having a column with max value [duplicate]

Keywords like TOP, LIMIT, ROWNUM, …etc are database dependent. Please read this article for more information.

http://en.wikipedia.org/wiki/Select_(SQL)#Result_limits

Oracle: ROWNUM could be used.

select * from (select * from table 
order by value desc, date_column) 
where rownum = 1;

Answering the question more specifically:

select high_val, my_key
from (select high_val, my_key
      from mytable
      where something = 'avalue'
      order by high_val desc)
where rownum <= 1

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