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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>[SERVER-24975] Query: Best indexing strategy for specific find command</title>
                <link>https://jira.mongodb.org/browse/SERVER-24975</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;What indexing strategy could be the best for this type of searchs:&lt;/p&gt;

&lt;p&gt;db.getCollection(&apos;collection&apos;).find(&lt;/p&gt;
{&apos;name&apos;: /a/i}
&lt;p&gt; )&lt;/p&gt;

&lt;p&gt;(Find command will always try to find a specific substring from a string, without another regex options).&lt;/p&gt;

&lt;p&gt;We know that if there is a normal index over the &quot;name&quot; field, this is used, by we need more performance.&lt;/p&gt;

&lt;p&gt;Could it be to change this find command to a &quot;text&quot; search command over another atribute calculated based upon all the posible letters combinations?, by example, if we had in attribute:&lt;/p&gt;

&lt;p&gt; &quot;name&quot; the value &quot;antonio&quot; &lt;/p&gt;

&lt;p&gt;whe could generate another atribute:&lt;/p&gt;

&lt;p&gt; &quot;name_extended&quot; with values &quot;a an ant anto anton antoni antonio&quot; &lt;/p&gt;

&lt;p&gt;and generate a text index over it:&lt;/p&gt;

&lt;p&gt;db.collection.createIndex( &lt;/p&gt;
{ &quot;name_extended&quot;: &quot;text&quot;}
&lt;p&gt;)&lt;/p&gt;

&lt;p&gt;and change our original find command to:&lt;/p&gt;

&lt;p&gt;db.getCollection(&apos;collection&apos;).find({$text: {$search: &quot;a&quot;, $caseSensitive: false}} )&lt;/p&gt;

&lt;p&gt;Could it be to make a good sharding policy to spread the scan phase along multiple servers?&lt;/p&gt;

&lt;p&gt;Could it be to focus in our application to make some limitations (only search for begining words, case sensitive)?&lt;/p&gt;

&lt;p&gt;We&#180;ll need your feedback to go in one or another direction, or another ideas/techniques that we haven&#180;t take into account.&lt;/p&gt;</description>
                <environment></environment>
        <key id="299938">SERVER-24975</key>
            <summary>Query: Best indexing strategy for specific find command</summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</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="-1">Unassigned</assignee>
                                    <reporter username="francisco.pardillo@sepalo.es">Francisco Javier Pardillo Mart&#237;n</reporter>
                        <labels>
                    </labels>
                <created>Mon, 11 Jul 2016 10:36:12 +0000</created>
                <updated>Thu, 14 Jul 2016 16:05:02 +0000</updated>
                            <resolved>Mon, 11 Jul 2016 11:00:43 +0000</resolved>
                                    <version>3.2.7</version>
                                                    <component>Index Maintenance</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1319703" author="ramon.fernandez" created="Mon, 11 Jul 2016 10:59:41 +0000"  >&lt;p&gt;Thanks for your report &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=francisco.pardillo%40sepalo.es&quot; class=&quot;user-hover&quot; rel=&quot;francisco.pardillo@sepalo.es&quot;&gt;francisco.pardillo@sepalo.es&lt;/a&gt;. Please note that the SERVER project is for reporting bugs or feature suggestions for the MongoDB server. For MongoDB-related support discussion please post on the &lt;a href=&quot;http://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-user group&lt;/a&gt; or &lt;a href=&quot;http://stackoverflow.com/questions/tagged/mongodb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Stack Overflow with the &lt;tt&gt;mongodb&lt;/tt&gt; tag&lt;/a&gt;, where your question will reach a larger audience. A question like this involving more discussion would be best posted on the &lt;a href=&quot;http://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-user group&lt;/a&gt;. See also our &lt;a href=&quot;https://www.mongodb.org/about/support/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Technical Support page&lt;/a&gt; for additional support resources.&lt;/p&gt;

&lt;p&gt;Regards,&lt;br/&gt;
Ram&#243;n.&lt;/p&gt;</comment>
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