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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>[DOCS-2163] Document that {&quot;a.0&quot;:1} syntax cannot be used to project array values</title>
                <link>https://jira.mongodb.org/browse/DOCS-2163</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;When discussing projection against array fields, the documentation needs to explicitly state that {&quot;a.0&quot;:1} syntax can&apos;t be used to project array values (in addition to pointing users to $slice / $elemMatch, as it currently does).&lt;/p&gt;</description>
                <environment></environment>
        <key id="96121">DOCS-2163</key>
            <summary>Document that {&quot;a.0&quot;:1} syntax cannot be used to project array values</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="9">Done</resolution>
                                        <assignee username="sam.kleinman">Sam Kleinman</assignee>
                                    <reporter username="rassi">J Rassi</reporter>
                        <labels>
                    </labels>
                <created>Tue, 29 Oct 2013 02:17:48 +0000</created>
                <updated>Sat, 9 May 2020 21:20:40 +0000</updated>
                            <resolved>Mon, 4 Nov 2013 16:59:01 +0000</resolved>
                                                    <fixVersion>mongodb-2.6</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1916486" author="markd" created="Mon, 11 Jun 2018 02:16:24 +0000"  >&lt;p&gt;I was attempting to project an array element and found it was not working and did not find any mention of the problem in the documentation.&#160; Eventually I stumbled on this ticket, I recommend updating the $project docs with this limitation: &lt;a href=&quot;https://docs.mongodb.com/manual/reference/operator/aggregation/project/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.com/manual/reference/operator/aggregation/project/&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="450958" author="auto" created="Mon, 4 Nov 2013 16:59:09 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;tychoish&apos;, u&apos;name&apos;: u&apos;Sam Kleinman&apos;, u&apos;email&apos;: u&apos;samk@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-2163&quot; title=&quot;Document that {&amp;quot;a.0&amp;quot;:1} syntax cannot be used to project array values&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-2163&quot;&gt;&lt;del&gt;DOCS-2163&lt;/del&gt;&lt;/a&gt;: strengthening language around projections from arrays.&lt;br/&gt;
Branch: v2.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/4242e0db413d7c3615adc1d07ca159095d09da91&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/4242e0db413d7c3615adc1d07ca159095d09da91&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="450957" author="auto" created="Mon, 4 Nov 2013 16:59:09 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;tychoish&apos;, u&apos;name&apos;: u&apos;Sam Kleinman&apos;, u&apos;email&apos;: u&apos;samk@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-2163&quot; title=&quot;Document that {&amp;quot;a.0&amp;quot;:1} syntax cannot be used to project array values&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-2163&quot;&gt;&lt;del&gt;DOCS-2163&lt;/del&gt;&lt;/a&gt;: strengthening language around projections from arrays.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/a450ec7cd700679bcb3cf326960a664cbc1c65c3&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/a450ec7cd700679bcb3cf326960a664cbc1c65c3&lt;/a&gt;&lt;/p&gt;</comment>
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