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    <title>MongoDB Jira</title>
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    <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-65847] Construct simpler parameterized SBE index scan plans when possible</title>
                <link>https://jira.mongodb.org/browse/SERVER-65847</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When a query gets auto-parameterized and an index scan plan is built by the &lt;tt&gt;QueryPlanner&lt;/tt&gt;, the SBE stage builder has to convert this into an SBE plan that will work for all possible values of the input parameters. This entails a fair amount of complexity and requires us to build a larger SBE plan. In particular, we currently always construct a plan with a &lt;tt&gt;branch&lt;/tt&gt; stage. One of the branches uses the fully generic recursive index scan algorithm, and the other just scans a range of index intervals known up front.&lt;/p&gt;

&lt;p&gt;For certain simple parameterized queries (e.g. if the bounds are based on a single equality predicate and will always be point bounds), we can avoid constructing this complicated &lt;tt&gt;branch&lt;/tt&gt; plan and still be fully correct for all possible parameter values. This enhancement should show up as a performance improvement in some of our microbenchmarks.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2029358">SERVER-65847</key>
            <summary>Construct simpler parameterized SBE index scan plans when possible</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="denis.grebennicov@mongodb.com">Denis Grebennicov</assignee>
                                    <reporter username="david.storch@mongodb.com">David Storch</reporter>
                        <labels>
                    </labels>
                <created>Wed, 20 Apr 2022 19:00:33 +0000</created>
                <updated>Sun, 29 Oct 2023 21:39:11 +0000</updated>
                            <resolved>Mon, 9 May 2022 11:04:44 +0000</resolved>
                                                    <fixVersion>6.0.0-rc5</fixVersion>
                    <fixVersion>6.1.0-rc0</fixVersion>
                                    <component>Query Planning</component>
                                        <votes>0</votes>
                                    <watches>15</watches>
                                                                                                                <comments>
                            <comment id="4534876" author="xgen-internal-githook" created="Mon, 9 May 2022 13:14:58 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Denis Grebennicov&apos;, &apos;email&apos;: &apos;denis.grebennicov@mongodb.com&apos;, &apos;username&apos;: &apos;denis631&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65847&quot; title=&quot;Construct simpler parameterized SBE index scan plans when possible&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65847&quot;&gt;&lt;del&gt;SERVER-65847&lt;/del&gt;&lt;/a&gt; Construct simpler parameterized SBE index scan plans when possible&lt;br/&gt;
Branch: v6.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8bdca7b05b91e53309d485c91f7d087a871fafa9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8bdca7b05b91e53309d485c91f7d087a871fafa9&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4532433" author="xgen-internal-githook" created="Fri, 6 May 2022 19:55:47 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Denis Grebennicov&apos;, &apos;email&apos;: &apos;denis.grebennicov@mongodb.com&apos;, &apos;username&apos;: &apos;denis631&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65847&quot; title=&quot;Construct simpler parameterized SBE index scan plans when possible&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65847&quot;&gt;&lt;del&gt;SERVER-65847&lt;/del&gt;&lt;/a&gt; Construct simpler parameterized SBE index scan plans when possible&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f6048ece71786e490684a472c87c70b0b3089f40&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f6048ece71786e490684a472c87c70b0b3089f40&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2041126">SERVER-66274</issuekey>
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