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    <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-67166] Heuristic CE for SargableNode</title>
                <link>https://jira.mongodb.org/browse/SERVER-67166</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Implement heuristic CE for SargableNode that takes into account the actual predicates (or equivalent intervals).&lt;/p&gt;

&lt;p&gt;That is, compute specific &lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;equality (or point intervals): &lt;span class=&quot;error&quot;&gt;&amp;#91;c,c&amp;#93;&lt;/span&gt;&lt;/li&gt;
	&lt;li&gt;closed-range inequality: &lt;span class=&quot;error&quot;&gt;&amp;#91;c1, c2&amp;#93;&lt;/span&gt;&lt;/li&gt;
	&lt;li&gt;one-sided inequality: (minKey, c]&lt;/li&gt;
	&lt;li&gt;inequalities (interval ends) can be either open or closed&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Each of the cases above will have a different default selectivity, which also depends on the actual collection cardinality.&lt;/p&gt;

&lt;p&gt;Consider using metadata for estimation (if already not used):&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;multikey info&lt;/li&gt;
	&lt;li&gt;unique info (_id field)&lt;/li&gt;
	&lt;li&gt;anything else?&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="2065732">SERVER-67166</key>
            <summary>Heuristic CE for SargableNode</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="timour.katchaounov@mongodb.com">Timour Katchaounov</assignee>
                                    <reporter username="timour.katchaounov@mongodb.com">Timour Katchaounov</reporter>
                        <labels>
                            <label>M1</label>
                    </labels>
                <created>Fri, 10 Jun 2022 07:16:37 +0000</created>
                <updated>Sun, 29 Oct 2023 21:37:02 +0000</updated>
                            <resolved>Tue, 19 Jul 2022 13:21:21 +0000</resolved>
                                                    <fixVersion>6.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4698388" author="xgen-internal-githook" created="Fri, 22 Jul 2022 15:31:00 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Timour Katchaounov&apos;, &apos;email&apos;: &apos;timour.katchaounov@mongodb.com&apos;, &apos;username&apos;: &apos;timourk&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-67166&quot; title=&quot;Heuristic CE for SargableNode&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-67166&quot;&gt;&lt;del&gt;SERVER-67166&lt;/del&gt;&lt;/a&gt; Heuristic CE for SargableNode&lt;/p&gt;

&lt;p&gt;Make PhysRewriter/FilterIndexing3MultiKey more stable on&lt;br/&gt;
different platforms.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/bee62352c57da8f025cf5b425f31d34c07eb1cfd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/bee62352c57da8f025cf5b425f31d34c07eb1cfd&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4688664" author="xgen-internal-githook" created="Tue, 19 Jul 2022 10:30:42 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Timour Katchaounov&apos;, &apos;email&apos;: &apos;timour.katchaounov@mongodb.com&apos;, &apos;username&apos;: &apos;timourk&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-67166&quot; title=&quot;Heuristic CE for SargableNode&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-67166&quot;&gt;&lt;del&gt;SERVER-67166&lt;/del&gt;&lt;/a&gt; Heuristic CE for SargableNode&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4af213f08a582a90534f5f98a9cb1d0976e4945b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4af213f08a582a90534f5f98a9cb1d0976e4945b&lt;/a&gt;&lt;/p&gt;</comment>
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