小编mik*_*k3s的帖子

我有SQL查询,我想用linq重写它.这个sql命令只加入两个表并对它们进行分组.问题在于分组.当我在一个表上使用group by时,一切正常,linq commant返回与sql命令相同的结果.但是当我想加入两个表然后由H.Ucet分组(例如)然后它返回其他结果作为我的sql命令.结果与使用左连接时相同,但我想要默认的内连接.

这是sql命令:

string dotazBankUcty = @"SELECT 
 H.UCET, 
 SUM(H.MD) AS MD, 
 SUM(H.DAL) AS DAL , 
 SUM(H.MD_M) AS MD_M, 
 SUM(H.DAL_ENA) DAL_M, 
 MAX(UBUC.KOD) AS KOD 
 FROM ACCOUNT H 
 inner join UBU on H.UCET = UBU.UCET GROUP BY H.UCET";

我尝试用这个linq命令重写它.

var accountQuery = new XPQuery<ACCOUNT >(CoreHelper.DataSession);

var ubuQuery = new XPQuery<UBU>(CoreHelper.DataSession);

var resultBankyUcty = (from h in accountQuery 
    join u in ubuQuery on h.CompoundKey1.UCET equals u.UCET
    group new { h, u } by new { h.CompoundKey1.UCET } into gUcty
                    select new
                    { …