Difference between revisions of "SUM"

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(Created page with "<table align='right' border='1'> <caption>Compatibility</caption> <tr><th colspan='3'>SUM(f)</th></tr> <tr><td align='center'>'''Engine'''</td><td align='center'>'''OK'''</td>...")
 
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<p>See also</p>
 
<p>See also</p>
 
<ul>
 
<ul>
   <li>[[AVG function]]</li>
+
   <li>[http://sqlzoo.net/w/index.php/AVG AVG function]</li>
 
   <li>[[COUNT function]]</li>
 
   <li>[[COUNT 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 08:59, 13 July 2012

Compatibility
SUM(f)
EngineOKAlternative
ingresYes
oracleYes
postgresYes
sqlserverYes

SUM

SUM adds a whole column of values.

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

   SELECT region, SUM(population)
    FROM bbc
   GROUP BY region 

With a GROUP BY region statement each region shows up just once. The SUM column gives the total for each region.

SELECT region, SUM(population)
  FROM bbc
 GROUP BY region

See also