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在此处输入图像描述这个不起作用: SELECT *FROM {User as u JOIN Address as a ON {u:a} = {a:pk}} 。

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2 回答 2

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正如您在关系基数中看到的,所有者作为用户。

所以查询应该是这样的

SELECT *FROM {User as u JOIN Address as a ON {u:pk} = {a:owner}} 
于 2022-01-28T14:29:40.423 回答
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错过了限定符是 "owner" ,通常按照约定将其命名为 type 。选择 {a.PK} 从 {customer as c 加入地址 as a on {c.pk}={a.owner}}

于 2022-01-28T14:01:48.430 回答