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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-19866] Allow more than one array in query when using $ operator</title>
                <link>https://jira.mongodb.org/browse/SERVER-19866</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The $ operator cannot be used in projections if there is more than one array field in the corresponding query. (&lt;a href=&quot;http://docs.mongodb.org/manual/reference/operator/projection/positional/#array-field-limitations&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://docs.mongodb.org/manual/reference/operator/projection/positional/#array-field-limitations&lt;/a&gt;)&lt;/p&gt;

&lt;p&gt;This seems counter-intuitive since in the projection, the $ operator occurs in an array field name and so it should be unambiguous to which array it refers.&lt;/p&gt;

&lt;p&gt;I&apos;d suggest therefore to remove this limitation and allow the $ operator even if there is more than one array field in the corresponding query.&lt;/p&gt;</description>
                <environment></environment>
        <key id="225086">SERVER-19866</key>
            <summary>Allow more than one array in query when using $ operator</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="-1">Unassigned</assignee>
                                    <reporter username="andre.spiegel@mongodb.com">Andre Spiegel</reporter>
                        <labels>
                    </labels>
                <created>Tue, 11 Aug 2015 16:17:11 +0000</created>
                <updated>Tue, 11 Aug 2015 16:25:19 +0000</updated>
                            <resolved>Tue, 11 Aug 2015 16:24:55 +0000</resolved>
                                    <version>3.0.5</version>
                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1002106" author="rassi@10gen.com" created="Tue, 11 Aug 2015 16:24:55 +0000"  >&lt;p&gt;Closing as a duplicate of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-18500&quot; title=&quot;Resolve ambiguity of positional projections with multiple implicit array traversal predicates in certain cases&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-18500&quot;&gt;SERVER-18500&lt;/a&gt;, which will permit this functionality.&lt;/p&gt;

&lt;p&gt;Andre, feel free to add a comment to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-18500&quot; title=&quot;Resolve ambiguity of positional projections with multiple implicit array traversal predicates in certain cases&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-18500&quot;&gt;SERVER-18500&lt;/a&gt; if you think the description is missing anything covered here.&lt;/p&gt;</comment>
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