Question

如何设置NHibernate标准来执行此类查询？

SELECT
    COUNT(1) AS CNT, 
    l.CAMPAIGN_ID AS CAMPAIGN_ID,
    MAX(mc.NAME) AS CAMPAIGN_NAME
FROM
    SA_LEADS l
INNER JOIN
    SA_CAMPAIGNS mc
ON
    l.CAMPAIGN_ID = mc.ID
GROUP BY
    CAMPAIGN_SOURCED_ID
ORDER BY 
    CNT DESC

我有两个表SA_LEADS和SA_CAMPAIGNS的映射。

Answer 1

对我来说，我会从我试图分组的元素开始，所以我将从一开始活动的基础。我无法从您的查询中看出，但我认为您的映射有一种从广告系列转移到销售线索的方式。我假设这被称为“SALES_LEAD_LIST”

我还想制作一个小班来接收投影结果，这样就可以创建一些东西来保存结果。

public class CAMPAIGN_PERFORMANCE
{
    public CAMPAIGN_PERFORMANCE() {}

    public int CP_ID {get; set;}
    public string CP_NAME {get; set;}
    public int CP_NO_OF_SALES_LEADS {get; set;}
}

一旦你有了投射结果的东西，你可以创建一个标准的标准，然后通过投影将它推入你的新课程

    ICriteria criteria = base.Session.CreateCriteria(typeof(SA_CAMPAIGNS));

    criteria.CreateAlias("SALES_LEADS_LIST", "SA_LEADS", JoinType.InnerJoin);

    criteria.SetProjection(Projections.ProjectionList()                                         

            .Add(Projections.Property("ID"), "CP_ID")                
            .Add(Projections.Property("CAMPAIGN_NAME"), "CP_NAME")    
            .Add(Projections.CountDistinct("SA_LEADS.ID"), "CP_NO_OF_SALES_LEADS")    
            .Add(Projections.GroupProperty("ID"));
            .Add(Projections.GroupProperty("CAMPAIGN_NAME")));

    IList<CAMPAIGN_PERFORMANCE> cpProjections = criteria
                    .SetResultTransformer(
                       new AliasToBeanResultTransformer(typeof(CAMPAIGN_PERFORMANCE)))
                    .List<CAMPAIGN_PERFORMANCE>();

如何设置NHibernate标准来执行此类查询？

1 个答案: