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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-70120] [CQF] Extra Unique stage after GroupBy </title>
                <link>https://jira.mongodb.org/browse/SERVER-70120</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://github.com/10gen/mongo/blob/master/src/mongo/db/query/optimizer/physical_rewriter_optimizer_test.cpp#L3907&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Example&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;A GroupBy followed by Unique in this example could be simplified to just the GroupBy, since the keys produced by the GroupBy are unique. We should investigate when this happens and add a rewrite to simplify.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2148476">SERVER-70120</key>
            <summary>[CQF] Extra Unique stage after GroupBy </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>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13201">Fixed</resolution>
                                        <assignee username="naama.bareket@mongodb.com">Naama Bareket</assignee>
                                    <reporter username="matt.boros@mongodb.com">Matt Boros</reporter>
                        <labels>
                    </labels>
                <created>Thu, 29 Sep 2022 21:19:03 +0000</created>
                <updated>Sun, 29 Oct 2023 21:32:36 +0000</updated>
                            <resolved>Mon, 10 Oct 2022 14:48:15 +0000</resolved>
                                                    <fixVersion>6.2.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4886484" author="xgen-internal-githook" created="Fri, 7 Oct 2022 16:53:42 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Naama Bareket&apos;, &apos;email&apos;: &apos;naama.bareket@mongodb.com&apos;, &apos;username&apos;: &apos;naama-bareket&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-70120&quot; title=&quot;[CQF] Extra Unique stage after GroupBy &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-70120&quot;&gt;&lt;del&gt;SERVER-70120&lt;/del&gt;&lt;/a&gt; &lt;span class=&quot;error&quot;&gt;&amp;#91;CQF&amp;#93;&lt;/span&gt; Extra Unique stage after GroupBy&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f51f96d79638e67bb310264fb547af028901ee8d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f51f96d79638e67bb310264fb547af028901ee8d&lt;/a&gt;&lt;/p&gt;</comment>
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