Question

我有一个玩家表现的表格，我想要为每位玩家返回高分，如果他们在获得此分数时没有出局，则在其后添加星号（＆＃39; *＆＃39;）。这是我到目前为止构建的查询，但它给了我错误＃1111：无效使用组函数

 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

我已经看过其他时候这个错误已经出现，它应该指示何时在MAX / MIN函数上执行SUM函数，但是我无法在查询中看到这种情况发生在哪里

我哪里出错了，我将如何纠正这个问题，grma

Answer 1

试试这个，即添加你在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

Answer 2

SELECT IF（is_out = 0，CONCAT（MAX（得分），＆＃39; *＆＃39;），MAX（得分））从击球WHERE得分= MAX（得分）

这没有任何意义（你不能在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。

MySQL错误＃1111

2 个答案: