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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-12524] Distinct: Empty query on hashed index returns bad result</title>
                <link>https://jira.mongodb.org/browse/SERVER-12524</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Result from distinct for empty query with a hashed index is incorrect:&lt;/p&gt;

&lt;p&gt;&amp;gt; t.distinct(&apos;a&apos;, {})&lt;br/&gt;
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 ]&lt;br/&gt;
&amp;gt; t.ensureIndex(&lt;/p&gt;
{a: &quot;hashed&quot;}
&lt;p&gt;);&lt;br/&gt;
&amp;gt; t.distinct(&apos;a&apos;, {})&lt;br/&gt;
[&lt;br/&gt;
    NumberLong(&quot;-6504342592125989714&quot;),&lt;br/&gt;
    NumberLong(&quot;-6200100076853976706&quot;),&lt;br/&gt;
    NumberLong(&quot;-1529429926180645992&quot;),&lt;br/&gt;
    NumberLong(&quot;848411777775835583&quot;),&lt;br/&gt;
    NumberLong(&quot;2433984061343616404&quot;),&lt;br/&gt;
    NumberLong(&quot;4470791281878691347&quot;),&lt;br/&gt;
    NumberLong(&quot;4854801880128277513&quot;),&lt;br/&gt;
    NumberLong(&quot;5902408780260971510&quot;),&lt;br/&gt;
    NumberLong(&quot;6497670140411665948&quot;),&lt;br/&gt;
    NumberLong(&quot;9174449368162552349&quot;)&lt;br/&gt;
]&lt;br/&gt;
&amp;gt; t.distinct(&apos;a&apos;, &lt;/p&gt;
{a: 3}
&lt;p&gt;)&lt;br/&gt;
[ 3 ]&lt;/p&gt;</description>
                <environment></environment>
        <key id="108179">SERVER-12524</key>
            <summary>Distinct: Empty query on hashed index returns bad result</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="9">Done</resolution>
                                        <assignee username="benety.goh@mongodb.com">Benety Goh</assignee>
                                    <reporter username="jonathan.abrahams">Jonathan Abrahams</reporter>
                        <labels>
                    </labels>
                <created>Wed, 29 Jan 2014 16:17:28 +0000</created>
                <updated>Mon, 11 Jul 2016 17:17:28 +0000</updated>
                            <resolved>Wed, 5 Feb 2014 20:09:38 +0000</resolved>
                                                    <fixVersion>2.6.0-rc0</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="494054" author="xgen-internal-githook" created="Wed, 5 Feb 2014 20:09:11 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;benety&apos;, u&apos;name&apos;: u&apos;Benety Goh&apos;, u&apos;email&apos;: u&apos;benety@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12524&quot; title=&quot;Distinct: Empty query on hashed index returns bad result&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12524&quot;&gt;&lt;del&gt;SERVER-12524&lt;/del&gt;&lt;/a&gt; distinct solution for empty query cannot use a special index.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/00f1db0d025aef71c91af00672f1bcc0110f3483&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/00f1db0d025aef71c91af00672f1bcc0110f3483&lt;/a&gt;&lt;/p&gt;</comment>
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