Question

我有一個FetchXml報表在CRM Online 2013上運行，有大約12,000條記錄。數據通過腳本從CRM Online轉移到SQL數據庫。我希望當前修改的記錄只能轉移到SQL。這是我的查詢

string fetchXml = string.Format(
    @"<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'> 
     <entity name='new_studentinformation' enableprefiltering ='1' prefilterparametername='CRM_Filterednew_studentinformation'> 
      <attribute name='new_studentid' /> 
      <attribute name='new_primaryhomeroom' /> 
      <attribute name='new_lastname' /> 
      <attribute name='new_firstname' /> 
      <attribute name='new_busnumber' /> 
      <attribute name='new_building' /> 
      <attribute name='new_grade' /> 
      <attribute name='modifiedon' /> 
      <attribute name='new_studentinformationid' /> 
      <filter type='and'> 
       <condition attribute='modifiedon' value='{0}' operator='on-or-after'/> 
      </filter> 
      <link-entity name='annotation' from='objectid' to='new_studentinformationid' alias='Notes' link-type='outer'> 
       <attribute name='documentbody'/> 
      </link-entity> 
     </entity> 
    </fetch>", 
    DateTime.Now.AddMinutes(-2).ToString()); 

這查詢在最近兩分鐘內被修改的記錄並將其轉移到SQL數據庫。現在的問題有兩個部分：

1. 如何更改查詢，以便它帶來了最新修改的記錄 而在最後兩分鐘修改的一個？

2. 二，將 提取XML總是查詢前5000個記錄？如果這個變化是 怎麼辦？可以說，在第6000條記錄中，它也會被查詢嗎？

Answer 1

您可以通過修改日期降序來訂購，然後通過更改如下所示的獲取xml來獲取第一條記錄。還可以通過添加count =「」屬性來控制檢索的記錄數量。我認爲這是最大的。可能有5000條記錄。

<fetch version='1.0' output-format='xml-platform' count="5000" page="1" no-lock="false" mapping='logical' distinct='false'> 
    <entity name='new_studentinformation' enableprefiltering ='1' prefilterparametername='CRM_Filterednew_studentinformation'> 
    <attribute name='new_studentid' /> 
    <attribute name='new_primaryhomeroom' /> 
    <attribute name='new_lastname' /> 
    <attribute name='new_firstname' /> 
    <attribute name='new_busnumber' /> 
    <attribute name='new_building' /> 
    <attribute name='new_grade' /> 
    <attribute name='modifiedon' /> 
    <attribute name='new_studentinformationid' /> 
    <filter type='and'> 
     <condition attribute='modifiedon' value='{0}' operator='on-or-after'/> 
    </filter> 
    <order attribute='modifiedon' descending='true' /> 
    <link-entity name='annotation' from='objectid' to='new_studentinformationid' alias='Notes' link-type='outer'> 
     <attribute name='documentbody'/> 
    </link-entity> 
    </entity> 
</fetch>