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我在我的 Java EE 项目中有这个 NativeQuery for MySQL：

SELECT 
    *,
    ROUND((price_2-price_1)*100/price_1,2) AS varprice_1,
    ROUND((quantity_2-quantity_1)*100/quantity_1,2) AS varcant_1,
    ROUND((price_3-price_2)*100/price_2,2) AS varprice_2,
    ROUND((quantity_3-quantity_2)*100/quantity_2,2) AS varcant_2,
    1 
FROM ( 
    SELECT   
        c.id_customer AS id_customer, 
        c.name AS customer,   
        r.id_rep AS id_rep, 
        r.descr AS rep,   
        a.id_article AS id_article, 
        a.name AS article, 
        ROUND(SUM(if(docdate BETWEEN '2013-06-30' AND '2013-12-30',quantity ,0)),2) AS quantity_1,
        ROUND(SUM(if(docdate BETWEEN '2013-06-30' AND '2013-12-30',net_price,0)),2) AS price_1,
        ROUND(SUM(if(docdate BETWEEN '2012-06-30' AND '2012-12-30',quantity ,0)),2) AS quantity_2,
        ROUND(SUM(if(docdate BETWEEN '2012-06-30' AND '2012-12-30',net_price,0)),2) AS price_2,
        ROUND(SUM(if(docdate BETWEEN '2011-06-30' AND '2011-12-30',quantity ,0)),2) AS quantity_3,
        ROUND(SUM(if(docdate BETWEEN '2011-06-30' AND '2011-12-30',net_price,0)),2) AS price_3, 
        1 
    FROM documento d 
    RIGHT JOIN pedido_cabezal pc ON d.id_documento = pc.id_documento 
    LEFT JOIN pedido_linea pl ON pc.id_documento = pl.id_documento 
    LEFT JOIN article a ON pl.id_article = a.id_article 
    LEFT JOIN customer c ON pc.id_customer=c.id_customer 
    LEFT JOIN rep r ON c.id_rep=r.id_rep 
    WHERE ( 
        (docdate BETWEEN '2013-06-30' AND '2013-12-30') OR
        (docdate BETWEEN '2012-06-30' AND '2012-12-30') OR  
        (docdate BETWEEN '2011-06-30' AND '2012-12-30')  
        )  
    GROUP BY a.id_article  
) subq 
ORDER BY price_1 DESC

这是一个动态生成的查询，取决于用户输入。我不喜欢使用本机查询，所以我现在正在使用它，我打算用标准查询来改变它，但我需要帮助：我不知道如何用标准查询代替这种查询. 在这种情况下，有没有办法或者可以使用本机查询，我应该停止担心它？

谢谢

4

1 回答 1

3

不幸的是，您不能在 from 子句中使用 JPA 子查询结果。既不在标准查询中，也不在 JPQL 查询中。这看起来像是将查询转换为 JPA 的最大问题。

其次，也没有Round功能。但是通过使用来克服这个问题应该不是问题CriteriaBuilder#selectCase()

也可以看看：

于 2013-12-30T22:10:17.437 回答