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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>[COMPASS-7376] Investigate changes in SERVER-82204: Classic window functions first/last handle missing field incorrectly </title>
                <link>https://jira.mongodb.org/browse/COMPASS-7376</link>
                <project id="13182" key="COMPASS">Compass </project>
                    <description>    &lt;div class=&quot;panel&quot; style=&quot;background-color: #c2d2c2;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;background-color: #239eb0;&quot;&gt;&lt;b&gt;Original Downstream Change Summary&lt;/b&gt;&lt;/div&gt;&lt;/div&gt;
&lt;p&gt;    The $first/$last operator in $setWindowFields will now set null to missing fields to be consistent with $first/$last in $group.&lt;/p&gt;
&lt;h2&gt;&lt;a name=&quot;DescriptionofLinkedTicket&quot;&gt;&lt;/a&gt;Description of Linked Ticket&lt;/h2&gt;
&lt;p&gt;    When the attribute tracked by first/last in the first/last document in the window has a missing attribute the functions return empty results. This is incorrect. According to the &lt;a href=&quot;https://www.mongodb.com/docs/manual/reference/operator/aggregation/first/#missing-data&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;documentation&lt;/a&gt; they should return null to be consistent with the $group behaviour.&lt;/p&gt;
</description>
                <environment></environment>
        <key id="2483448">COMPASS-7376</key>
            <summary>Investigate changes in SERVER-82204: Classic window functions first/last handle missing field incorrectly </summary>
                <type id="10501" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Investigation</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                    </labels>
                <created>Thu, 26 Oct 2023 11:23:34 +0000</created>
                <updated>Mon, 29 Jan 2024 14:27:57 +0000</updated>
                            <resolved>Mon, 29 Jan 2024 14:27:57 +0000</resolved>
                                                    <fixVersion>No version</fixVersion>
                                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="6049030" author="JIRAUSER1256529" created="Mon, 29 Jan 2024 14:27:57 +0000"  >&lt;p&gt;No impact&lt;/p&gt;</comment>
                            <comment id="5835243" author="dbeng-pm-bot" created="Mon, 30 Oct 2023 22:56:57 +0000"  >&lt;p&gt;&lt;em&gt;Fix Version updated for upstream &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-82204&quot; title=&quot;Classic window functions first/last handle missing field incorrectly &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-82204&quot;&gt;&lt;del&gt;SERVER-82204&lt;/del&gt;&lt;/a&gt;:&lt;/em&gt; &lt;br/&gt;
7.1.1, 7.2.0-rc0, 6.0.12, 5.0.23, 7.0.4&lt;/p&gt;</comment>
                            <comment id="5809468" author="dbeng-pm-bot" created="Thu, 26 Oct 2023 13:01:36 +0000"  >&lt;p&gt;&lt;em&gt;Fix Version updated for upstream &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-82204&quot; title=&quot;Classic window functions first/last handle missing field incorrectly &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-82204&quot;&gt;&lt;del&gt;SERVER-82204&lt;/del&gt;&lt;/a&gt;:&lt;/em&gt; &lt;br/&gt;
7.1.1, 7.2.0-rc0, 7.0.3, 6.0.12, 5.0.23&lt;/p&gt;</comment>
                            <comment id="5809465" author="dbeng-pm-bot" created="Thu, 26 Oct 2023 13:01:29 +0000"  >&lt;p&gt;&lt;em&gt;Fix Version updated for upstream &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-82204&quot; title=&quot;Classic window functions first/last handle missing field incorrectly &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-82204&quot;&gt;&lt;del&gt;SERVER-82204&lt;/del&gt;&lt;/a&gt;:&lt;/em&gt; &lt;br/&gt;
7.2.0-rc0, 7.0.3, 6.0.12, 5.0.23&lt;/p&gt;</comment>
                            <comment id="5809462" author="dbeng-pm-bot" created="Thu, 26 Oct 2023 13:01:22 +0000"  >&lt;p&gt;&lt;em&gt;Fix Version updated for upstream &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-82204&quot; title=&quot;Classic window functions first/last handle missing field incorrectly &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-82204&quot;&gt;&lt;del&gt;SERVER-82204&lt;/del&gt;&lt;/a&gt;:&lt;/em&gt; &lt;br/&gt;
7.2.0-rc0, 6.0.12, 5.0.23&lt;/p&gt;</comment>
                            <comment id="5809459" author="dbeng-pm-bot" created="Thu, 26 Oct 2023 13:01:15 +0000"  >&lt;p&gt;&lt;em&gt;Fix Version updated for upstream &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-82204&quot; title=&quot;Classic window functions first/last handle missing field incorrectly &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-82204&quot;&gt;&lt;del&gt;SERVER-82204&lt;/del&gt;&lt;/a&gt;:&lt;/em&gt; &lt;br/&gt;
7.2.0-rc0, 5.0.23&lt;/p&gt;</comment>
                            <comment id="5809059" author="dbeng-pm-bot" created="Thu, 26 Oct 2023 11:23:37 +0000"  >&lt;p&gt;&lt;em&gt;Fix Version updated for upstream &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-82204&quot; title=&quot;Classic window functions first/last handle missing field incorrectly &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-82204&quot;&gt;&lt;del&gt;SERVER-82204&lt;/del&gt;&lt;/a&gt;:&lt;/em&gt; &lt;br/&gt;
7.2.0-rc0&lt;/p&gt;</comment>
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