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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-72061] [CQF] Allow shared variables between IndexScan intervals</title>
                <link>https://jira.mongodb.org/browse/SERVER-72061</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Because of our interval simplification techniques, there can be a lot of shared information between index scan intervals. &lt;a href=&quot;https://github.com/10gen/mongo/blob/36163c9e9ba824703cd0a5b0713646fff47fda36/src/mongo/db/query/optimizer/utils/interval_utils.cpp#L285-L287&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Here&lt;/a&gt; is the general equation we use for simplifying unioned intervals. We repeat a,b,c,d multiple times between the four bounds. This can result in large plans, for example &lt;a href=&quot;https://github.com/10gen/mongo/blob/36163c9e9ba824703cd0a5b0713646fff47fda36/src/mongo/db/query/optimizer/physical_rewriter_optimizer_test.cpp#L1701&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;We would like to factor out these repeated definitions into a &quot;Let&quot;, so each index scan can share the definition.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2209031">SERVER-72061</key>
            <summary>[CQF] Allow shared variables between IndexScan intervals</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-query-optimization">Backlog - Query Optimization</assignee>
                                    <reporter username="matt.boros@mongodb.com">Matt Boros</reporter>
                        <labels>
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                <created>Tue, 13 Dec 2022 00:22:54 +0000</created>
                <updated>Tue, 3 Jan 2023 16:30:34 +0000</updated>
                            <resolved>Tue, 3 Jan 2023 16:30:34 +0000</resolved>
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