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MySQL生产一栏,在一份选定的说明中填满。
原标题:MySQL producing columns with loop in a select statement

In MySQL 我的职能是,根据这一数字,从另一个表格中得出一定结果。 执行目前的情况如下:

SELECT 
  id,
  date,
  function(do stuff with value 1) as t1,
  function(do stuff with value 2) as t2,
  function(do stuff with value 3) as t3,
  ...
  function(do stuff with value N) as tN
FROM table

您可以选择发言(或甚至制定表格的程序),这样:

SELECT
  id,
  date,
  LOOP x = 1 through N
    function(do stuff with value x) as tx,
  END LOOP
FROM table

感谢。

最佳回答

是的,你可以......审视动态的SQL。

rel=“nofollow” 这里有一个样本

rel=“nofollow”和另一个实例

总的来说,你进行了一项扼杀,其中载有你想要执行、准备、然后执行......的库克声明。

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