mysql - MySQL 错误 #1111

Question

我有一个球员表现表，我想返回每个球员的高分，如果他们在达到这个分数时没有出局，则在其后添加一个星号 ('*')。这是我到目前为止构建的查询，但它给了我错误 #1111: group 函数的无效使用

 SELECT player_id, players.name,
 COUNT( * ) AS matches, 
 SUM( score ) AS runs,
(SELECT IF(is_out = 0, CONCAT(MAX(score),'*'), MAX(score)) FROM batting WHERE score = MAX(score) ) AS high
 FROM batting
 RIGHT JOIN players ON batting.player_id = players.p_id
 WHERE player_id <> 0
 GROUP BY player_id

我看过其他时候出现这个错误，它应该表明何时通过 MAX/MIN 函数执行 SUM 函数，但我看不到在我的查询中发生这种情况

我哪里错了，我将如何纠正这个问题，grma

Answer 1

选择 IF(is_out = 0, CONCAT(MAX(score),'*'), MAX(score)) FROM batting WHERE score = MAX(score)

这没有任何意义（您不能在 WHERE 子句中使用聚合函数）。事实上，我很难想象你期望它做什么。MySQL 可能也很困惑。

Answer 2

试试这个，即添加您在 GROUP BY 子句中选择的列名（ player_id，players.name ）：

SELECT player_id, players.name,
 COUNT( * ) AS matches, 
 SUM( score ) AS runs,
(SELECT IF(is_out = 0, CONCAT(MAX(score),'*'), MAX(score)) FROM batting WHERE score = MAX(score) ) AS high
 FROM batting
 RIGHT JOIN players ON batting.player_id = players.p_id
 WHERE player_id <> 0
 GROUP BY player_id, players.name, high