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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-40254] Collapse project stage in a pipeline so the projection occurs in DocumentSourceCursor</title>
                <link>https://jira.mongodb.org/browse/SERVER-40254</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-24860&quot; title=&quot;Optimize away entire pipeline if it can be answered using a query&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-24860&quot;&gt;&lt;del&gt;SERVER-24860&lt;/del&gt;&lt;/a&gt; an optimization was added to skip the aggregation and answer the pipeline using just a query plan, if the pipeline can be collapsed into a single $cursor stage. Currently a pipeline with a $project stage can be collapsed if we can generated a covered query plan. We should be able to extend it to uncovered plans and collapse the $project stage, if it is a simple projection without complex pipeline expressions.&lt;/p&gt;</description>
                <environment></environment>
        <key id="720454">SERVER-40254</key>
            <summary>Collapse project stage in a pipeline so the projection occurs in DocumentSourceCursor</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="anton.korshunov@mongodb.com">Anton Korshunov</reporter>
                        <labels>
                    </labels>
                <created>Thu, 21 Mar 2019 13:33:13 +0000</created>
                <updated>Tue, 6 Dec 2022 03:03:00 +0000</updated>
                            <resolved>Wed, 23 Oct 2019 13:06:18 +0000</resolved>
                                                                    <component>Aggregation Framework</component>
                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
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            <issuekey id="978512">SERVER-44216</issuekey>
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