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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[DOCS-950] Document index bound improvements for elemMatch query on multikey index</title>
                <link>https://jira.mongodb.org/browse/DOCS-950</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;Our old behavior was that if two indexed field paths shared a common prefix, then only the first of those field paths appearing in the index would have its index bounds used for the query. With this ticket, if the index bounds for the two field paths come from the same $elemMatch clause then the index bounds on both field paths are used for the query.&lt;/p&gt;

&lt;p&gt;See &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3104&quot; title=&quot;index bound improvements for elemMatch query on multikey index&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3104&quot;&gt;&lt;del&gt;SERVER-3104&lt;/del&gt;&lt;/a&gt; for more details.&lt;/p&gt;</description>
                <environment></environment>
        <key id="60929">DOCS-950</key>
            <summary>Document index bound improvements for elemMatch query on multikey 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="kay.kim@mongodb.com">Kay Kim</assignee>
                                    <reporter username="siddharth.singh@10gen.com">siddharth.singh@10gen.com</reporter>
                        <labels>
                    </labels>
                <created>Fri, 4 Jan 2013 17:51:24 +0000</created>
                <updated>Mon, 16 Mar 2015 23:56:40 +0000</updated>
                            <resolved>Wed, 8 Oct 2014 16:30:56 +0000</resolved>
                                                    <fixVersion>v1.3.12</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="231070" author="siddharth.singh@10gen.com" created="Fri, 4 Jan 2013 17:59:48 +0000"  >&lt;p&gt;Note that this optimization is only applied if the field names within the $elemMatch are undotted. There are some cases where the optimization does not work correctly if the fields are dotted, described in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7509&quot; title=&quot;Combine index ranges for dotted fields within a $elemMatch expression, when possible&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7509&quot;&gt;&lt;del&gt;SERVER-7509&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
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