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多的谷歌搜索後,我找不到工作的解決方案來映射INNER JOIN被描述爲在SQL如下:JPA /休眠 - INNER JOIN在串聯列名
select i.label, i.cat_label from category cat
inner join items it on (it.context_code||'.'||it.label_code)=cat.cat_label
如何定義一對多類別實體?何寫一個查詢條件? 我嘗試如下,沒有成功:
Category.java
@OneToMany
@JoinColumnOrFormula(formula = @JoinFormula(value = "CONTEXT_CODE || . || LABEL_CODE"))
private List <Items> items;
Item.java
@Formula(value = "CONTEXT_CODE || . || LABEL_CODE")
private String contextCodeLabelCode;