Difference between revisions of "MAX"

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   <li>[[EXTRACT function]]</li>
 
   <li>[[EXTRACT function]]</li>
   <li>[[SUM function]]</li>
+
   <li>[http://sqlzoo.net/w/index.php/SUM SUM function]</li>
 
   <li>[http://sqlzoo.net/w/index.php/MIN MIN function]</li>
 
   <li>[http://sqlzoo.net/w/index.php/MIN MIN function]</li>
 
</ul>
 
</ul>

Revision as of 09:53, 13 July 2012

Compatibility
MAX(f)
EngineOKAlternative
ingresYes
mysqlYes
oracleYes
postgresYes
sqlserverYes

MAX

MAX finds the highest values in a column or part of a column

MAX is an aggregate function it is normally used with GROUP BY.

 SELECT region, MAX(name)
    FROM bbc
   GROUP BY region 

With a GROUP BY region statement each region shows up just once. The MAX column gives the "largest" name in the region in the context of strings this is the last name alphabetically.

SELECT region, MAX(name)
  FROM bbc
 GROUP BY region
SELECT region, MAX(name)
  FROM bbc
 GROUP BY region

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