文档解释
ORA-41712: missing groupby specification for the collection “string”
Cause: An attempt was made to use a collection element with no groupby specification in the rule condition.
Action: Correct the input and try again.
ORA-41712错误指示数据集中遗漏了Group By规格。
官方解释
ORA-41712 是由 SELECT 子句的集合中缺少 GROUP BY 的声明引起的一个 Oracle 错误。
常见案例
例如,您尝试以下查询时,就可能会出现此错误:
SELECT name FROM table;
一般处理方法及步骤
要解决此错误,您需要为 SELECT 子句添加 GROUP BY 语句,指定将聚合值添加到何处。正确的 SELECT 子句应该是这样:
SELECT name FROM table GROUP BY name;