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    <title>MongoDB Jira</title>
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    <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-12469] Allow subdocuments to be used in covered indexes</title>
                <link>https://jira.mongodb.org/browse/SERVER-12469</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;eI&apos;m familiar with the limitations of covered queries. Namely, from the docs (&lt;a href=&quot;http://docs.mongodb.org/manual/tutorial/create-indexes-to-support-queries/#indexes-covered-queries&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://docs.mongodb.org/manual/tutorial/create-indexes-to-support-queries/#indexes-covered-queries&lt;/a&gt;) :&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{ &quot;user.login&quot;: 1 } doesn&apos;t index &lt;/span&gt;&lt;/pre&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;db.users.find( { &quot;user.login&quot;: &quot;tester&quot; }, { &quot;user.login&quot;: 1, _id: 0 } )&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;
&lt;p&gt;As a user this is really frustrating and doesn&apos;t make a lot of sense. I&apos;m sure there may be internal design reasons, but is there really a theoretical reason it is not possible?&lt;/p&gt;

&lt;p&gt;This limitation is forcing us to dramatically change our schema design by migrating such fields off subdocuments. It is making us loose one of the main benefits of MongoDB so I would really like to see this limitation lifted, if possible.&lt;/p&gt;

&lt;p&gt;Thanks a lot!&lt;/p&gt;</description>
                <environment></environment>
        <key id="107525">SERVER-12469</key>
            <summary>Allow subdocuments to be used in covered indexes</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="david.storch@mongodb.com">David Storch</assignee>
                                    <reporter username="sylvinus">Sylvain Zimmer</reporter>
                        <labels>
                    </labels>
                <created>Fri, 24 Jan 2014 16:35:11 +0000</created>
                <updated>Wed, 10 Dec 2014 23:07:05 +0000</updated>
                            <resolved>Mon, 10 Mar 2014 02:07:36 +0000</resolved>
                                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="512227" author="dan@10gen.com" created="Mon, 10 Mar 2014 02:07:23 +0000"  >&lt;p&gt;Thanks &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=hbcheng&quot; class=&quot;user-hover&quot; rel=&quot;hbcheng&quot;&gt;hbcheng&lt;/a&gt;!  Couldn&apos;t find that issue when I was looking earlier.&lt;/p&gt;</comment>
                            <comment id="512144" author="hbcheng" created="Sun, 9 Mar 2014 19:47:08 +0000"  >&lt;p&gt;Is this the same issue as &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2104?&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;https://jira.mongodb.org/browse/SERVER-2104?&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;That one is marked in &quot;Planning Bucket A&quot;&lt;/p&gt;

&lt;p&gt;It might help to vote for the aforementioned issue to push it higher on the priority list. I am also watching this issue as it would allow me to simplify my index and query design significantly.&lt;/p&gt;</comment>
                            <comment id="512105" author="sylvinus" created="Sun, 9 Mar 2014 12:15:51 +0000"  >&lt;p&gt;Can someone help? Thanks.&lt;/p&gt;</comment>
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