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        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-33678] Make regex indexability a factor of query shapes</title>
                <link>https://jira.mongodb.org/browse/SERVER-33678</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The options applied to a regex pattern, such as whether or not it is anchored, impact the query plan that is generated.  For example, a left-anchored regex will have tighter index bounds than an unanchored pattern.  Such changes yield different performance characteristics.  &lt;/p&gt;

&lt;p&gt;The present behavior captures these different characteristics in a single query shape.  There may be benefits to using regex options as distinguishing aspects of query shapes.  &lt;/p&gt;</description>
                <environment></environment>
        <key id="506012">SERVER-33678</key>
            <summary>Make regex indexability a factor of query shapes</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="ian.boros@mongodb.com">Ian Boros</assignee>
                                    <reporter username="christopher.harris@mongodb.com">Chris Harris</reporter>
                        <labels>
                    </labels>
                <created>Mon, 5 Mar 2018 21:01:00 +0000</created>
                <updated>Sun, 29 Oct 2023 22:34:07 +0000</updated>
                            <resolved>Thu, 10 May 2018 19:38:00 +0000</resolved>
                                                    <fixVersion>4.0.0-rc0</fixVersion>
                                    <component>Querying</component>
                                        <votes>2</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="1888526" author="xgen-internal-githook" created="Thu, 10 May 2018 19:37:28 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Ian Boros&apos;, &apos;email&apos;: &apos;ian.boros@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-33678&quot; title=&quot;Make regex indexability a factor of query shapes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-33678&quot;&gt;&lt;del&gt;SERVER-33678&lt;/del&gt;&lt;/a&gt; make regex options a factor in query shapes&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b09ce3bdc6ae82e99576a2530b25a77fe3c72ee1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b09ce3bdc6ae82e99576a2530b25a77fe3c72ee1&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1825964" author="david.storch" created="Wed, 7 Mar 2018 15:20:54 +0000"  >&lt;p&gt;Thanks for filing this Chris. It would make sense to have a discriminator in the plan cache key which makes anchored and unanchored regexes act as different query shapes.&lt;/p&gt;</comment>
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            <issuekey id="2034664">SERVER-66015</issuekey>
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