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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-63700] Make sure $lookup, lowered to NLJ in SBE, has proper semantics for empty arrays</title>
                <link>https://jira.mongodb.org/browse/SERVER-63700</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The current implementation of $lookup via NLJ in SBE doesn&apos;t match the semantics in the classic engine (that is, it doesn&apos;t match terminal empty arrays to null/missing/undefined). &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-63368&quot; title=&quot;$lookup matches empty arrays to null/missing/undefined&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-63368&quot;&gt;&lt;del&gt;SERVER-63368&lt;/del&gt;&lt;/a&gt; tracks whether we&apos;d like to change the classic semantics. &lt;/p&gt;</description>
                <environment></environment>
        <key id="1984238">SERVER-63700</key>
            <summary>Make sure $lookup, lowered to NLJ in SBE, has proper semantics for empty arrays</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="irina.yatsenko@mongodb.com">Irina Yatsenko</assignee>
                                    <reporter username="irina.yatsenko@mongodb.com">Irina Yatsenko</reporter>
                        <labels>
                    </labels>
                <created>Tue, 15 Feb 2022 21:31:21 +0000</created>
                <updated>Sun, 29 Oct 2023 21:42:25 +0000</updated>
                            <resolved>Tue, 22 Mar 2022 11:21:33 +0000</resolved>
                                                    <fixVersion>6.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4426215" author="JIRAUSER1259274" created="Tue, 22 Mar 2022 11:21:33 +0000"  >&lt;p&gt;Fixed by &lt;a href=&quot;https://github.com/10gen/mongo/pull/4049&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/mongo/pull/4049&lt;/a&gt;, that was merged as &lt;a href=&quot;https://github.com/mongodb/mongo/commit/a50de54ad246afc5b85720b28e7e89720b4a1d6c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a50de54ad246afc5b85720b28e7e89720b4a1d6c&lt;/a&gt;&lt;/p&gt;</comment>
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