RE: How to handle SSRS reports which will take long time in CRM
Is your link type = outer necessary to get your requirements.
Try like this:
<fetch version="1.0" output-format="xml-platform" mapping="logical" distinct="false">
<entity name="opportunity" >
<attribute name="name" />
<attribute name="opportunityid" />
<attribute name="customerid" />
<attribute name="estimatedvalue" />
<attribute name="estimatedclosedate" />
<attribute name="statuscode" />
<attribute name="new_mostrecentreview" />
<order attribute="name" descending="false" />
<filter type="and">
<condition attribute="statecode" operator="in">
<value>0</value>
<value>1</value>
</condition>
<condition attribute="opportunityid" operator="eq" value="@Opportunity" />
</filter>
<link-entity name="new_review" from="new_reviewid" to="new_mostrecentreview" link-type="outer" alias="MRR">
<attribute name="new_reviewid" />
<attribute name="new_score" />
<attribute name="new_reviewdate" />
</link-entity>
</entity>
</fetch>