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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
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    <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-4463] Allow covered index use for non-array fields in multi-key index</title>
                <link>https://jira.mongodb.org/browse/SERVER-4463</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Please allow this scenario to work for an indexOnly query.&lt;/p&gt;

&lt;p/&gt;
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&lt;p/&gt;

&lt;p&gt;This is for a &quot;full-text&quot; search style feature.&lt;/p&gt;

&lt;p&gt;Thanks, Chris&lt;/p&gt;</description>
                <environment></environment>
        <key id="26324">SERVER-4463</key>
            <summary>Allow covered index use for non-array fields in multi-key index</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="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="scriby">Chris Scribner</reporter>
                        <labels>
                    </labels>
                <created>Fri, 9 Dec 2011 15:50:08 +0000</created>
                <updated>Tue, 6 Dec 2022 05:38:35 +0000</updated>
                            <resolved>Thu, 12 Jan 2017 19:52:39 +0000</resolved>
                                    <version>2.0.1</version>
                                                    <component>Index Maintenance</component>
                                        <votes>5</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="1475850" author="david.storch" created="Thu, 12 Jan 2017 19:51:27 +0000"  >&lt;p&gt;As far as I can tell, this is indeed a duplicate of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3173&quot; title=&quot;Planner should use path-level multikey info to generate covered plans when possible&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3173&quot;&gt;&lt;del&gt;SERVER-3173&lt;/del&gt;&lt;/a&gt;, so I am closing as such. As part of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-15086&quot; title=&quot;Allow for efficient range queries over non-array fields in multikey indices&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-15086&quot;&gt;&lt;del&gt;SERVER-15086&lt;/del&gt;&lt;/a&gt;, we extended the query system to persist more granular information about which fields/paths are multikey in the catalog. The path-level multikey metadata work allows us to implement this optimization, as well as other related optimizations (e.g. &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-2104&quot; title=&quot;covered index should support dotted fields&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-2104&quot;&gt;&lt;del&gt;SERVER-2104&lt;/del&gt;&lt;/a&gt;). Please watch &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3173&quot; title=&quot;Planner should use path-level multikey info to generate covered plans when possible&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3173&quot;&gt;&lt;del&gt;SERVER-3173&lt;/del&gt;&lt;/a&gt; for further updates.&lt;/p&gt;</comment>
                            <comment id="373712" author="jcliffe" created="Wed, 3 Jul 2013 20:58:03 +0000"  >&lt;p&gt;It feels related, but regardless it also feels very doable by the index and likely just a behavioral switch without structure modification. &amp;lt;/hypothesizing&amp;gt;&lt;/p&gt;</comment>
                            <comment id="91634" author="eliot" created="Thu, 23 Feb 2012 22:47:44 +0000"  >&lt;p&gt;@brian - this isn&apos;t really related to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3173&quot; title=&quot;Planner should use path-level multikey info to generate covered plans when possible&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3173&quot;&gt;&lt;del&gt;SERVER-3173&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="91629" author="brian.allen.smith" created="Thu, 23 Feb 2012 22:41:27 +0000"  >&lt;p&gt;Also a pain point for us.&lt;/p&gt;

&lt;p&gt;Is this related to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3173&quot; title=&quot;Planner should use path-level multikey info to generate covered plans when possible&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3173&quot;&gt;&lt;del&gt;SERVER-3173&lt;/del&gt;&lt;/a&gt;?&lt;/p&gt;</comment>
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