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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-2801] Combine distinct and count</title>
                <link>https://jira.mongodb.org/browse/SERVER-2801</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;There are use cases when you don&apos;t want all the distinct values (or they don&apos;t fit in the limit), you want their number. It would be great to have and optimized command for that (as an alternative to slow Map/Reduce that creates temp collections).&lt;/p&gt;</description>
                <environment></environment>
        <key id="15185">SERVER-2801</key>
            <summary>Combine distinct and count</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>
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                                    <resolution id="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="sergei.tulentsev@gmail.com">Sergei Tulentsev</reporter>
                        <labels>
                    </labels>
                <created>Sat, 19 Mar 2011 17:08:09 +0000</created>
                <updated>Tue, 16 Nov 2021 15:37:18 +0000</updated>
                            <resolved>Thu, 10 Jan 2013 23:10:49 +0000</resolved>
                                    <version>1.8.0</version>
                                                    <component>Querying</component>
                                        <votes>11</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="236632" author="eliot" created="Thu, 10 Jan 2013 23:10:49 +0000"  >&lt;p&gt;You can now do this very efficiently with the aggregation framework.&lt;/p&gt;</comment>
                            <comment id="57177" author="sergei.tulentsev@gmail.com" created="Wed, 28 Sep 2011 01:34:06 +0000"  >&lt;p&gt;No, it does not add this capability. &lt;img class=&quot;emoticon&quot; src=&quot;https://jira.mongodb.org/images/icons/emoticons/smile.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/p&gt;</comment>
                            <comment id="35918" author="brahmana" created="Fri, 3 Jun 2011 10:12:10 +0000"  >&lt;p&gt;Does this also add the capability of limiting the number of entries returned by distinct? With the current 1.8.2-rc3 I do not see limit working with distinct.&lt;/p&gt;</comment>
                            <comment id="26339" author="sergei.tulentsev@gmail.com" created="Sun, 20 Mar 2011 05:27:18 +0000"  >&lt;p&gt;Fixed and created pull request: &lt;a href=&quot;https://github.com/mongodb/mongo/pull/34&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/pull/34&lt;/a&gt;&lt;/p&gt;</comment>
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