LINQ：多加入隨着最大修訂過濾

-1

var transrevmax = db.TRANSACTs 
    .Where(x => x.SITE == "1" && 
       x.DATE_IN >= dateinchoice && 
       x.DATE_OUT <= dateoutchoice) 
    .GroupBy(x => x.TICKET_NO) 
    .Select(x => x.OrderByDescending(y => y.REV_NO).FirstOrDefault()) 
    .ToList();

，並返回交易的確切名單我想加入下面要經過從獲取值...

var exportrecovery = (from trans in transrevmax 
         join detail in db.DETAILs on new { TICKET_NO = trans.TICKET_NO, REV_NO = trans.REV_NO } equals new { TICKET_NO = detail.TICKET_NO, REV_NO = detail.REV_NO } 
         join job in db.JOBs on new { JOB_CODE = trans.JOB_CODE, CUST_CODE = trans.CUST_CODE } equals new { JOB_CODE = job.CODE, CUST_CODE = job.CUST_CODE } 
         join customer in db.CUSTOMERs on trans.CUST_CODE equals customer.CODE 
         join invoiced in db.INVOICEDs on trans.TICKET_NO equals invoiced.TICKET_NO 
         where trans.DATE_IN >= dateinchoice && trans.DATE_OUT <= dateoutchoice && trans.STATUS.ToString().Trim() != "V" && trans.STATUS.ToString().Trim() != "E" 
         select new { ADDRESS = customer.ADDRESS, CITY = customer.CITY, STATE = customer.STATE, ZIP = customer.ZIP, FREIGHT = detail.HAUL_CHGE + detail.FUEL_CHGE, JOB_NAME = job.NAME, HAUL_TAX = detail.HAUL_TAX, INVOICE_NO = invoiced.INVOICE_NO, CUST_NAME = customer.NAME, TAX_CODE = customer.TAX_CODE, MAT_CHGE = detail.MAT_CHGE, MAT_TAX = detail.MAT_TAX, MAT_CODE = detail.MAT_CODE, QTY = detail.QTY, PRICE = detail.PRICE, DATE_MOD = trans.DATE_OUT, REV_NO = trans.REV_NO, SITE = trans.SITE, TICKET_NO = trans.TICKET_NO, CUST_CODE = trans.CUST_CODE, JOB_CODE = trans.JOB_CODE } 
        ).ToList();

......如果我運行第一行，我將事務限制爲僅限於具有最大修訂版（我想要的）的事務，如果我運行連接（將「transrevmax」替換爲表「db.TRANSACTs 「）我獲得了正確的票號範圍，但它包含所有修訂。我難以理解如何使用連接表，並根據它們的（最大）修訂版本號獲取唯一的行。當這兩個結合使用時，我會收到零行。請指教。

來源

2017-06-20 Developing DEV

刪除transrevmax創建的ToList。

來源

2017-06-20 19:59:57 NetMage

工作就像一個魅力！在此期間，我發現，如果我放棄第一行中的where部分（transrevmax），並將其用作後續過濾器以用於難以處理的聯接，則會產生所需的結果（我在查詢中添加了「where site =」部分本身）以及。感謝您的解決方案和您的幫助。 –

LINQ：多加入隨着最大修訂過濾

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