Question

我有一个带有此查询的SpringBoot应用程序

 @Transactional
    @Modifying
    @Query("update HotelDailyPrice cdp  set cdp.price = (select nvl (avg (cp.price),0) "
            + "from HotelPrice cp where cp.hotel = ?1 and cp.updateDate > ?2), cdp.day = ?3 where cdp.hotel = ?1 ")
    void updateDailyAveragePrice (Hotel Hotel, Date dayDate, String dayDateString);

但我收到了这个错误：

Caused by: java.lang.IllegalStateException: No data type for node: org.hibernate.hql.internal.ast.tree.MethodNode 
 \-[METHOD_CALL] MethodNode: '('
    +-[METHOD_NAME] IdentNode: 'nvl' {originalText=nvl}
    \-[EXPR_LIST] SqlNode: 'exprList'
       +-[AGGREGATE] AggregateNode: 'avg'
       |  \-[DOT] DotNode: 'hotel1_.price' {propertyName=price,dereferenceType=PRIMITIVE,getPropertyPath=price,path=cp.price,tableAlias=hotel1_,className=com.hotels
.backend.persistence.domain.backend.HotelPrice,classAlias=cp}
       |     +-[ALIAS_REF] IdentNode: 'hotel1_.id' {alias=cp, className=com.hotels.backend.persistence.domain.backend.HotelPrice, tableAlias=hotel1_}
       |     \-[IDENT] IdentNode: 'price' {originalText=price}
       \-[NUM_INT] LiteralNode: '0'

在查询

中添加 nvl 后会出现此问题

Answer 1

使用coalesce而不是nvl ...这是jpql等价物

Answer 2

与sql查询的列不同，您需要引用HQL的类变量。

请参阅已经回答的问题。

No data type for node: org.hibernate.hql.internal.ast.tree.IdentNode HQL

没有节点的数据类型：org.hibernate.hql.internal.ast.tree.MethodNode

2 个答案: