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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-36609] Modify allPaths indexes to support equality to empty array</title>
                <link>https://jira.mongodb.org/browse/SERVER-36609</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When check if something is equal to an empty array, the planner currently builds the following bounds:&lt;/p&gt;
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&lt;p&gt;This should &quot;just work&quot; with a $** index, but we should check to be sure.&lt;/p&gt;</description>
                <environment></environment>
        <key id="587479">SERVER-36609</key>
            <summary>Modify allPaths indexes to support equality to empty array</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="yuta.arai@mongodb.com">Yuta Arai</assignee>
                                    <reporter username="ian.boros@mongodb.com">Ian Boros</reporter>
                        <labels>
                    </labels>
                <created>Mon, 13 Aug 2018 14:53:52 +0000</created>
                <updated>Sun, 29 Oct 2023 22:29:02 +0000</updated>
                            <resolved>Wed, 26 Sep 2018 17:03:51 +0000</resolved>
                                                    <fixVersion>4.1.3</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="2015177" author="xgen-internal-githook" created="Wed, 26 Sep 2018 17:02:56 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;yarai&apos;, &apos;email&apos;: &apos;yuta.arai@10gen.com&apos;, &apos;username&apos;: &apos;yarai&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36609&quot; title=&quot;Modify allPaths indexes to support equality to empty array&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36609&quot;&gt;&lt;del&gt;SERVER-36609&lt;/del&gt;&lt;/a&gt; Modify allPaths indexes to support equality to empty array&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/54d601d3fd7297f71380178ee34029479edea944&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/54d601d3fd7297f71380178ee34029479edea944&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2001168" author="ian.boros" created="Wed, 12 Sep 2018 20:33:46 +0000"  >&lt;p&gt;If we don&apos;t get to this, we should re-check some of the code in the plan cache discriminators which might treat equality to [] as supported by the index.&lt;/p&gt;</comment>
                            <comment id="1987075" author="ian.boros" created="Mon, 27 Aug 2018 21:26:25 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=david.storch&quot; class=&quot;user-hover&quot; rel=&quot;david.storch&quot;&gt;david.storch&lt;/a&gt; I filed &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-36896&quot; title=&quot;Support equality to empty object in allPaths indexes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-36896&quot;&gt;&lt;del&gt;SERVER-36896&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="1987031" author="david.storch" created="Mon, 27 Aug 2018 20:55:14 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=ian.boros&quot; class=&quot;user-hover&quot; rel=&quot;ian.boros&quot;&gt;ian.boros&lt;/a&gt;, should we have a separate ticket for equality to empty object?&lt;/p&gt;</comment>
                            <comment id="1981454" author="ian.boros" created="Tue, 21 Aug 2018 16:47:37 +0000"  >&lt;p&gt;Should also check that this works with equality to empty object, if we want to support that.&lt;/p&gt;

&lt;p&gt;We may need to update the plan cache discriminators as part of this ticket, so I do not believe that this will &quot;just work&quot; any more.&lt;/p&gt;</comment>
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