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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-4336] range queries against an indexed field within an array ignores the upper (or lower) bound</title>
                <link>https://jira.mongodb.org/browse/SERVER-4336</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;See: &lt;a href=&quot;http://groups.google.com/group/mongodb-user/browse_thread/thread/7a67b122e4bf495a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://groups.google.com/group/mongodb-user/browse_thread/thread/7a67b122e4bf495a&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;I don&apos;t know if this a feature of multikeys or what but it seems wrong...&lt;/p&gt;

&lt;p&gt;Imagine I have a collection with documents that look like this:&lt;/p&gt;

&lt;p&gt;{ &lt;br/&gt;
   name: &quot;Test&quot; &lt;br/&gt;
   details: [&lt;/p&gt;
{ 
       timestamp: 1319083200000, 
       type: &quot;something&quot; 
     }
&lt;p&gt;,&lt;/p&gt;
     { 
       timestamp: 1320083200000, 
       type: &quot;something else&quot; 
     }
&lt;p&gt;   ]&lt;br/&gt;
} &lt;/p&gt;

&lt;p&gt;These commands will create one of those documents, index it, and then explain a query:&lt;/p&gt;

&lt;p&gt;db.testdocuments.insert({name: &quot;Test&quot;, details: [&lt;/p&gt;
{timestamp: 
1319083200000, type: &quot;something&quot;}
&lt;p&gt;, &lt;/p&gt;
{timestamp: 
1320083200000, type: &quot;something else&quot;}
&lt;p&gt;]})&lt;br/&gt;
db.testdocuments.ensureIndex(&lt;/p&gt;
{&quot;details.timestamp&quot;: 1}
&lt;p&gt;) &lt;br/&gt;
db.testdocuments.find({&apos;details.timestamp&apos;: {$gte: &lt;br/&gt;
1319083200000, $lte: 1319093200000}}).explain() &lt;br/&gt;
{ &lt;br/&gt;
        &quot;cursor&quot; : &quot;BtreeCursor details.timestamp_1&quot;, &lt;br/&gt;
        &quot;nscanned&quot; : 404081, &lt;br/&gt;
        &quot;nscannedObjects&quot; : 404081, &lt;br/&gt;
        &quot;n&quot; : 3494, &lt;br/&gt;
        &quot;millis&quot; : 3063, &lt;br/&gt;
        &quot;nYields&quot; : 455, &lt;br/&gt;
        &quot;nChunkSkips&quot; : 0, &lt;br/&gt;
        &quot;isMultiKey&quot; : true, &lt;br/&gt;
        &quot;indexOnly&quot; : false, &lt;br/&gt;
        &quot;indexBounds&quot; : &lt;/p&gt;
{ 
                &quot;details.timestamp&quot; : [ 
                        [ 
                                1319083200000, 
                                1.7976931348623157e+308 
                        ] 
                ] 
        }
&lt;p&gt; &lt;br/&gt;
} &lt;/p&gt;

&lt;p&gt;NOTE the upper bound is messed up...&lt;/p&gt;

&lt;p&gt;If I do a descending index the lower bound is messed up.&lt;/p&gt;

&lt;p&gt;Also, note that if you create a document that only has one element in the details array the index bounds are correct.&lt;/p&gt;</description>
                <environment></environment>
        <key id="25171">SERVER-4336</key>
            <summary>range queries against an indexed field within an array ignores the upper (or lower) bound</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="3">Duplicate</resolution>
                                        <assignee username="aaron">Aaron Staple</assignee>
                                    <reporter username="aharbick">Andrew Harbick</reporter>
                        <labels>
                    </labels>
                <created>Mon, 21 Nov 2011 01:51:35 +0000</created>
                <updated>Fri, 7 Mar 2014 00:57:32 +0000</updated>
                            <resolved>Mon, 21 Nov 2011 18:23:34 +0000</resolved>
                                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="68003" author="aaron" created="Mon, 21 Nov 2011 18:23:34 +0000"  >&lt;p&gt;Yep, I think it&apos;s a duplicate of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4180&quot; title=&quot;Allow multiple constraints (on same field) within a $elemMatch clause to be used with a multikey index&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4180&quot;&gt;&lt;del&gt;SERVER-4180&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="67985" author="aharbick" created="Mon, 21 Nov 2011 17:30:07 +0000"  >&lt;p&gt;Looks like this is a duplicate of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4180&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;https://jira.mongodb.org/browse/SERVER-4180&lt;/a&gt;&lt;/p&gt;</comment>
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