Difference between revisions of "MAX"
From SQLZOO
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<table align='right' border='1'> | <table align='right' border='1'> | ||
<caption>Compatibility</caption> | <caption>Compatibility</caption> | ||
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<tr><td align='left'>sqlserver</td><td>Yes</td><td></td></tr> | <tr><td align='left'>sqlserver</td><td>Yes</td><td></td></tr> | ||
</table> | </table> | ||
| + | <h3>MAX</h3> | ||
<p>MAX finds the highest values in a column or part of a column</p> | <p>MAX finds the highest values in a column or part of a column</p> | ||
<p>MAX is an aggregate function it is normally used with GROUP BY.</p> | <p>MAX is an aggregate function it is normally used with GROUP BY.</p> | ||
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<li>[[EXTRACT function]]</li> | <li>[[EXTRACT function]]</li> | ||
<li>[[SUM function]]</li> | <li>[[SUM function]]</li> | ||
| − | <li>[ | + | <li>[http://sqlzoo.net/w/index.php/MIN MIN function]</li> |
</ul> | </ul> | ||
Revision as of 08:46, 13 July 2012
| MAX(f) | ||
|---|---|---|
| Engine | OK | Alternative |
| ingres | Yes | |
| mysql | Yes | |
| oracle | Yes | |
| postgres | Yes | |
| sqlserver | Yes | |
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
See also
