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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>[DOCS-6718] Clarify why certain prefix indexes are more performant</title>
                <link>https://jira.mongodb.org/browse/DOCS-6718</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;URL: &lt;a href=&quot;https://docs.mongodb.org/manual/tutorial/create-indexes-to-support-queries/#create-indexes-to-support-your-queries&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.org/manual/tutorial/create-indexes-to-support-queries/#create-indexes-to-support-your-queries&lt;/a&gt;&lt;/p&gt;


&lt;p&gt;Could you provide a  further explanation on the following texts in Documentation? Thanks!&lt;/p&gt;


&lt;p&gt;&quot;There are some situations where the prefix indexes may offer better query performance: for example if z is a large array.&lt;/p&gt;

&lt;p&gt;The &lt;/p&gt;
{ x: 1, y: 1, z: 1 }
&lt;p&gt; index can also support many of the same queries as the following index:&lt;/p&gt;

{ x: 1, z: 1 }
&lt;p&gt;&quot;&lt;/p&gt;</description>
                <environment>&lt;br/&gt;
&lt;br/&gt;
*Location*: &lt;a href=&quot;https://docs.mongodb.org/manual/tutorial/create-indexes-to-support-queries/#create-indexes-to-support-your-queries&quot;&gt;https://docs.mongodb.org/manual/tutorial/create-indexes-to-support-queries/#create-indexes-to-support-your-queries&lt;/a&gt;&lt;br/&gt;
*User-Agent*: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.73 Safari/537.36&lt;br/&gt;
*Referrer*: &lt;a href=&quot;https://docs.mongodb.org/manual/reference/indexes/&quot;&gt;https://docs.mongodb.org/manual/reference/indexes/&lt;/a&gt;&lt;br/&gt;
*Screen Resolution*: 1920 x 1200&lt;br/&gt;
*repo*: docs&lt;br/&gt;
*source*: tutorial/create-indexes-to-support-queries&lt;br/&gt;
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        <key id="242165">DOCS-6718</key>
            <summary>Clarify why certain prefix indexes are more performant</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="xgen-internal-docs">Docs Collector User</reporter>
                        <labels>
                            <label>bite-sized</label>
                    </labels>
                <created>Thu, 3 Dec 2015 20:32:33 +0000</created>
                <updated>Mon, 30 Oct 2023 21:38:43 +0000</updated>
                            <resolved>Tue, 1 Nov 2022 11:00:53 +0000</resolved>
                                                    <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4943557" author="edu.bot" created="Tue, 1 Nov 2022 11:00:50 +0000"  >&lt;p&gt;Hello! This ticket has been closed due to inactivity. If you believe this ticket is still important, please reopen it and leave a comment to explain why. Thank you!&lt;/p&gt;</comment>
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