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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-1474] Ability to use count on embedded documents as a query condition for documents</title>
                <link>https://jira.mongodb.org/browse/SERVER-1474</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I am writing an application which tracks astronimical observations of targets. I have looked at documentation and it seems that I can use $elemMatch to find, for example, targets with at least one observation with (time &amp;gt; 1 week ago, type=photometry). However there doesn&apos;t seem to be a way to search for targets with at least 3 observations matching the criteria, or less than 2 matching observations etc.&lt;/p&gt;

&lt;p&gt;This would be the equivilent of:&lt;br/&gt;
SELECT * FROM target JOIN observation &lt;span class=&quot;error&quot;&gt;&amp;#91;no need for ON clause because observation is embedded in target&amp;#93;&lt;/span&gt; WHERE observation.time&amp;gt;1281432059 AND observation.type=&apos;photometry&apos; AND COUNT&lt;img class=&quot;emoticon&quot; src=&quot;https://jira.mongodb.org/images/icons/emoticons/star_yellow.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&amp;gt;=3 GROUP BY target.id&lt;/p&gt;

&lt;p&gt;More info is at &lt;a href=&quot;http://groups.google.com/group/mongodb-user/browse_thread/thread/a34e0b9296c8a075&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/a34e0b9296c8a075&lt;/a&gt;&lt;/p&gt;</description>
                <environment>Universal</environment>
        <key id="12810">SERVER-1474</key>
            <summary>Ability to use count on embedded documents as a query condition for documents</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="mike1989">Mike Worth</reporter>
                        <labels>
                    </labels>
                <created>Tue, 17 Aug 2010 09:23:01 +0000</created>
                <updated>Tue, 6 Dec 2022 05:48:47 +0000</updated>
                            <resolved>Fri, 19 May 2017 18:27:48 +0000</resolved>
                                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1573597" author="asya" created="Wed, 17 May 2017 17:23:04 +0000"  >&lt;p&gt;This is possible to do using aggregation framework, there doesn&apos;t seem to be any work to be done here.&lt;/p&gt;</comment>
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