Question

我正在尝试获取计数的最大值。代码如下

SELECT coachID, COUNT(coachID)
FROM coaches_awards GROUP BY coachID
HAVING COUNT(coachID) = 
(
   SELECT MAX(t2.awards)
    FROM (
             SELECT coachID, count(coachID) as awards
             FROM coaches_awards
             GROUP BY coachID
          ) t2
);

然而有些事情一直在失败。内部查询工作并给出我想要的答案，如果内部查询被所需的数字替换，则外部查询将起作用。所以我假设我犯了一些语法错误。

我哪里错了？

Answer 1

如果您只想找一行，为什么不这样做：

<script src="https://d3js.org/d3.v4.min.js"></script>
<svg width="300" height="200"></svg>

如果您想要关联，请使用SELECT coachID, COUNT(coachID) as cnt FROM coaches_awards GROUP BY coachID ORDER BY cnt DESC LIMIT 1;或RANK()：

DENSE_RANK()

HiveSQLException：无法识别'SELECT''MAX''附近的输入（''在表达式规范

1 个答案: