ORA-25954: missing primary key or unique constraint on dimension

文档解释

ORA-25954: missing primary key or unique constraint on dimension

Cause: An attempt to create a join index was made, which failed because one or more dimensions did not have an appropriate constraint matching the join conditions.

Action: Ensure that the where clause is correct (contains all of the constraint columns) and that an enforced constraint is on each dimension table.

ORA-25954错误是指维表缺失主键或唯一约束的错误。

官方解释

ORA-25954是用于维度表的主键或唯一约束列的缺失错误。主键或唯一约束可以在维表上面创建，以便删除或更新时正常工作。

常见案例

当在维度表中创建索引时，该错误可能发生。

一般处理方法及步骤

1.使用ALTER TABLE语句在维度表中创建一个主键或唯一约束。

2.然后检查在维表上创建的索引是否有效。

3.通过再次测试任务来确保更改是否生效。