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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-83441] Pushdown top-level fields from FilterNode into PhysicalScanNode</title>
                <link>https://jira.mongodb.org/browse/SERVER-83441</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently this optimization is supported on a Sargable node. In order to be able to skip the Filter-&amp;gt;Sargable rewrite we should be able to push-down top-level fields directly from a Filter node into a Scan node.&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="2505137">SERVER-83441</key>
            <summary>Pushdown top-level fields from FilterNode into PhysicalScanNode</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="13201">Fixed</resolution>
                                        <assignee username="timour.katchaounov@mongodb.com">Timour Katchaounov</assignee>
                                    <reporter username="anton.korshunov@mongodb.com">Anton Korshunov</reporter>
                        <labels>
                            <label>M7</label>
                    </labels>
                <created>Mon, 20 Nov 2023 11:38:39 +0000</created>
                <updated>Thu, 11 Jan 2024 15:56:47 +0000</updated>
                            <resolved>Thu, 21 Dec 2023 12:06:18 +0000</resolved>
                                                    <fixVersion>7.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5963455" author="xgen-internal-githook" created="Wed, 20 Dec 2023 17:13:09 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Timour Katchaounov&apos;, &apos;email&apos;: &apos;34627040+timourk@users.noreply.github.com&apos;, &apos;username&apos;: &apos;timourk&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-83441&quot; title=&quot;Pushdown top-level fields from FilterNode into PhysicalScanNode&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-83441&quot;&gt;&lt;del&gt;SERVER-83441&lt;/del&gt;&lt;/a&gt; Implement top-level fields pushdown from Filter into CollScan (#17683)&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-83441&quot; title=&quot;Pushdown top-level fields from FilterNode into PhysicalScanNode&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-83441&quot;&gt;&lt;del&gt;SERVER-83441&lt;/del&gt;&lt;/a&gt; Implement top-level fields pushdown from Filter into&lt;br/&gt;
CollScan&lt;/p&gt;

&lt;p&gt;Push top-level PathGet as a PhysicalScan projection.&lt;/p&gt;

&lt;p&gt;Implemented via path analysis inside the implementor transport for&lt;br/&gt;
FilterNode. If there any fields to be pushed down, the transport creates&lt;br/&gt;
both a PhysicalScan node with the pushed fields, and FilterNode with&lt;br/&gt;
modified paths, where each top-level PathGet is removed.&lt;/p&gt;

&lt;p&gt;The transformation is performed only for FilterNodes that are directly&lt;br/&gt;
on top of a ScanNode. In order to be efficient, this transformation&lt;br/&gt;
assumes that the FilterNode contains all the paths and path conditions,&lt;br/&gt;
that is, top-level conjunctions have not been split into a sequence of&lt;br/&gt;
FilterNode.&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: 32cba0c99ac4d8e758068be6a724c0a6bc2d1ab0&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/29a5df3095b5aeaff0eb3abd41cd94f90f856d6e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/29a5df3095b5aeaff0eb3abd41cd94f90f856d6e&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2505138">SERVER-83442</issuekey>
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            <issuekey id="2505431">SERVER-83456</issuekey>
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            <issuekey id="2530439">SERVER-84366</issuekey>
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