mysql - mysql中列的计算

Question

我需要基于此执行计算：

(col1 + col2 + col3 + col4 + col5) /col6

完成此计算后，我想根据获得的结果执行 orderby。

请建议。我知道如何执行这样的求和：

SELECT SUM(column1) + SUM(column2) + SUM(columnN) FROM mytable 

Answer 1

SELECT (column1+column2+columnN)/column6
FROM mytable
ORDER BY (column1+column2+columnN)/column6

Answer 2

我想你的意思是：

SELECT ((column1 + column2 + columnN) / column6) as calc 
FROM mytable order by calc

Answer 3

SELECT (col1 + col2 + col3 + col4 + col5) /col6 as calculated
FROM your_table
ORDER BY calculated

Answer 4

试试这个 ：：

SELECT (column1+column2+columnN) as total,
total/column6 as average
FROM mytable
ORDER BY total