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Old 12-16-2009, 12:30 AM   #1
secretlydead
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Registered: Sep 2003
Location: Qingdao, China
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mysql sum from one of two columns


How do you get the sum from two columns, selecting only one column at a time by whichever number is smaller?

For example, you have this:
col1, col2
2, 1
1, 2
2, 1

When you do the select sum query, it replies: "3".
 
Old 12-16-2009, 01:11 AM   #2
secretlydead
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Registered: Sep 2003
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it's like this:

SELECT SUM( IF( col1 < col2, col1, col2 ) ) AS small_sum FROM table;
 
  


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