PHP MySQL返回分割结果

Question

我有疑问：

SELECT * FROM members ORDER BY ( firstColumn / anotherColumn ) DESC

现在我打印这个：

return $query['firstColumn'] / $query['anotherColumn'];

是否可以在没有任何php技巧的情况下打印分割结果？例如return $query['dividedColumns'];

Answer 1

列别名将解决您的问题，您可以将查询更改为：

SELECT members.*, 
      ( firstColumn / anotherColumn ) AS `divided_amount`  
FROM members 
ORDER BY divived_amount DESC;

Answer 2

您可以直接在查询中执行此操作，并将该结果用作ORDER BY参数。

SELECT *, firstColumn/anotherColumn as dividedColumns 
FROM members 
ORDER BY dividedColumns DESC

现在，您可以在PHP中将其用作$query['dividedColumns']。

• https://dev.mysql.com/doc/refman/5.7/en/arithmetic-functions.html

Answer 3

你可以试试这个

SELECT *, (firstColumn/anotherColumn) AS dividedColumns FROM members ORDER BY ( firstColumn / anotherColumn ) DESC