Question

我构造了以下JPQL查询，其中根据传入的时间戳发送结果。我希望对此进行修改，并传递一个数字，而不是月份值，例如，以获取过去6个月的所有结果。

如果相关，我正在使用Oracle DB。我尝试在此查询中传递datediff方法，但它引发编译错误。有没有办法做到这一点？

我当前的查询。

@Query("SELECT SUM(urlCount.referEventTotalCount) " +
            "FROM UrlCountEntity urlCount " +
            "JOIN urlCount.eventTypes et " +
            "WHERE urlCount.url.urlTx IN :urls " +
            "AND et.referEventTypeDs =:eventType " +
            "AND urlCount.updateTimeStamp <=:timeStamp") 
    Integer getTotalCount(@Param("urls") List<String> urls, @Param("eventType")String eventType, @Param("timeStamp")Timestamp timeStamp);

要修改该行->“ AND urlCount.updateTimeStamp <=：timeStamp”）

  @Query("SELECT SUM(urlCount.referEventTotalCount) " +
            "FROM UrlCountEntity urlCount " +
            "JOIN urlCount.eventTypes et " +
            "WHERE urlCount.url.urlTx IN :urls " +
            "AND et.referEventTypeDs =:eventType ")
            // "AND urlCount.updateTimeStamp <=:timeStamp") // instead of this, pass in the numOfMths value to calculate how much data to show (example past 3 mths)
  Integer getTotalCount(@Param("urls") List<String> urls, @Param("eventType")String eventType, @Param("numOfMths")int numOfMths);

Answer 1

对于Oracle，您可以使用带有负值的ADD_MONTH减去。

ADD_MONTHS(SYSDATE, -6)

您可以这样调用此函数：

function('ADD_MONTH', CURRENT_DATE, -6)

因此您的查询可能如下所示：

 @Query("SELECT SUM(urlCount.referEventTotalCount) " +
        "FROM UrlCountEntity urlCount " +
        "JOIN urlCount.eventTypes et " +
        "WHERE urlCount.url.urlTx IN :urls " +
        "AND et.referEventTypeDs =:eventType " +
        "AND urlCount.updateTimeStamp >= function('ADD_MONTH', CURRENT_DATE, :month)")

查询以获取JPQL中过去X个月的数据

1 个答案: