至少一个所有者

问题描述

 大家好，

我有实体表，其中包含entity_id列。

我还有entity_owner表并且它也作为entity_id和owner_id列。

现在我需要设置一个规则，即实体应该至少有一个所有者，尽管它可以有多个所有者。 / p>

我如何实现这一目标？ 

请提供建议。

解决方案

 Hi all,

I got entities table and it has entity_id column among others.

I got also entity_owner table and it as entity_id and owner_id columns among others as well.

Now I would need to set a rule that entity should have at least one owner, though it can have more than one owner.

How do I achieve that? 

Please advise.

解决方案

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