我正在使用 JPA 运行以下查询并得到下面提到的异常:
JPA 代码:
int count = em.createQuery(QueryCollections.getSoldProductUpdateQuery(billGuid).toString()).executeUpdate();
这是查询:
Query:
UPDATE at_product currentproduct
JOIN
(SELECT
atbillfields.billeditemguid AS productguid,
COUNT(*) AS number_of_people_bought,
SUM(atbillfields.billeditemqty) AS soldquantity
FROM
jtbillingtest.at_salesbill atsalesbill
JOIN jtbillingtest.at_billfields atbillfields ON atsalesbill.billbatchguid = atbillfields.billbatchguid
WHERE
atsalesbill.billguid = '41'
GROUP BY atbillfields.billeditemguid) soldproductdetails ON soldproductdetails.productguid = currentproduct.productguid
SET
currentproduct.productQuantity = currentproduct.productQuantity - soldproductdetails.soldquantity
jpa 抛出的异常。
> Exception , line 1, column 34: syntax error at [JOIN]. Internal
> Exception: MissingTokenException(inserted [@-1,0:0='<missing
> SET>',<62>,1:34] at JOIN) at
> org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1477)
> at myjavfxapp.dal.ProductDal.updateSoldProducts(ProductDal.java:46)
> at
> myjavfxapp.controller.BillingController$6.handle(BillingController.java:421)
> at
但是,如果我直接在 MySQL 服务器中运行此查询,它就会正常运行。请指出我是否遗漏了什么。