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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
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    <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-83574] Rewrite single-field disjunctions to eqMember, consolidate eqMember</title>
                <link>https://jira.mongodb.org/browse/SERVER-83574</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When skipping the Filter-&amp;gt;Sargable transformation, the optimizer doesn&apos;t generate partial schema requirements, and consequently doesn&apos;t call&#160;&lt;br/&gt;
PartialSchemaReqLowerTransport which in turn would call consolidateEqDisjunctions(). As a result not all disjunctions are consolidated into a single eqMember. This task should:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Rewrite disjunctions of the form: {$or: [ 
{a: 1}
&lt;p&gt;, {a: 2}, {b: 3}]} into eqMember.&lt;/p&gt;&lt;/li&gt;
	&lt;li&gt;Consolidate eqMember on the same field into one eqMember.&lt;/li&gt;
	&lt;li&gt;Remove duplicate members.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;The potential performance benefit of this rewrite should come from:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;potentially removing duplicate disjunctions&lt;/li&gt;
	&lt;li&gt;reducing the size of the SBE plan, and using a single traverseF with a single isMember instead of multiple traverseF for each equality.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;This rewrite could be done as part of a more general simplification.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2509190">SERVER-83574</key>
            <summary>Rewrite single-field disjunctions to eqMember, consolidate eqMember</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="3">Duplicate</resolution>
                                        <assignee username="backlog-query-optimization">Backlog - Query Optimization</assignee>
                                    <reporter username="timour.katchaounov@mongodb.com">Timour Katchaounov</reporter>
                        <labels>
                            <label>M7</label>
                    </labels>
                <created>Mon, 27 Nov 2023 08:43:16 +0000</created>
                <updated>Tue, 23 Jan 2024 19:34:49 +0000</updated>
                            <resolved>Tue, 23 Jan 2024 14:40:50 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>7</watches>
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            <issuekey id="2505431">SERVER-83456</issuekey>
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            <issuekey id="2529988">SERVER-84351</issuekey>
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            <issuekey id="2529988">SERVER-84351</issuekey>
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            <issuekey id="2554666">SERVER-85626</issuekey>
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