mysql - mysql中的子查询问题

Question

我正在尝试获取过去 n 个月内唯一球员的前 3 名得分。当我尝试执行查询时出现错误:

“where 子句”中的未知列“f.SC_Date”

下面是我的查询

SELECT * from   scores f
WHERE
  SC_Id IN (
          SELECT SC_Id FROM (
                  SELECT SC_Id from scores where DATE_FORMAT( SC_Date, "%Y%m" ) = DATE_FORMAT( f.SC_Date, "%Y%m" ) AND US_Id != 0  ORDER BY SC_Score DESC 
                   LIMIT 3
          ) AS u )ORDER BY DATE_FORMAT( SC_Date, "%Y%m" ) DESC, SC_Score DESC

Answer 1

你不能像那样在内部查询中使用 f.SC_Date - 记住括号中的位将首先运行，然后在结果上运行外面的位。

您需要在该 select 语句中声明 scores f 才能工作。

我希望你根本不需要它 - 就像:

SELECT * from   scores f
WHERE
  SC_Id IN (
          SELECT SC_Id FROM (
                  SELECT SC_Id from scores where DATE_FORMAT( SC_Date, "%Y%m" ) = DATE_FORMAT( SC_Date, "%Y%m" ) AND US_Id != 0  ORDER BY SC_Score DESC 
                   LIMIT 3
          ) AS u )ORDER BY DATE_FORMAT( SC_Date, "%Y%m" ) DESC, SC_Score DESC

应该可以，除非我误会了您的意图。