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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-5338] Strange results with identical but differently structured queries</title>
                <link>https://jira.mongodb.org/browse/SERVER-5338</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I am tracking some slow queries and found some odd behavior. This query (generated by Morphia) scans 20k objects and correctly returns 22 objects:&lt;/p&gt;

&lt;p&gt;db.Example.find({ $and: [ &lt;/p&gt;
{ lc: &quot;eng&quot; }
&lt;p&gt;, { $or: [ &lt;/p&gt;
{ group: &quot;cn&quot; }
&lt;p&gt;, &lt;/p&gt;
{ group: &quot;all&quot; }
&lt;p&gt; ] }, { &quot;indices.textLc&quot;: &lt;/p&gt;
{ $in: [ &quot;media strengthening&quot;, &quot;strengthening&quot;, &quot;media&quot; ] }
&lt;p&gt; }, { wordCount: &lt;/p&gt;
{ $gte: 1 , $lte: 2 }
&lt;p&gt; } ] }).explain();&lt;/p&gt;

&lt;p&gt;But it has this in the indexBounds: &quot;wordCount&quot; : [	&lt;span class=&quot;error&quot;&gt;&amp;#91;1,1.7976931348623157e+308&amp;#93;&lt;/span&gt;],&lt;/p&gt;

&lt;p&gt;This other query has the same limits and gives the same 22 objects, but only scans 4k objects:&lt;/p&gt;

&lt;p&gt;db.Example.find( {lc: &quot;eng&quot; , $or: [ &lt;/p&gt;
{ group: &quot;cn&quot; }
&lt;p&gt;, &lt;/p&gt;
{ group: &quot;all&quot; }
&lt;p&gt; ], &quot;indices.textLc&quot;: &lt;/p&gt;
{ $in: [ &quot;media strengthening&quot;, &quot;strengthening&quot;, &quot;media&quot; ] }
&lt;p&gt; ,  wordCount: { $gte: 1 , $lte: 2 }}).explain();&lt;/p&gt;

&lt;p&gt;This explain gives the same unbound max wordCount, but is obviously much faster. Is this something that can be fixed in the server or do I need to restructure all my queries?&lt;/p&gt;</description>
                <environment></environment>
        <key id="33314">SERVER-5338</key>
            <summary>Strange results with identical but differently structured queries</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="3">Duplicate</resolution>
                                        <assignee username="aaron">Aaron Staple</assignee>
                                    <reporter username="niccottrell">Nic Cottrell (Personal)</reporter>
                        <labels>
                    </labels>
                <created>Mon, 19 Mar 2012 19:56:20 +0000</created>
                <updated>Fri, 7 Mar 2014 00:57:13 +0000</updated>
                            <resolved>Tue, 26 Feb 2013 20:06:34 +0000</resolved>
                                    <version>2.0.3</version>
                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="276461" author="aaron" created="Tue, 26 Feb 2013 20:05:44 +0000"  >&lt;p&gt;Hi Nic - $or behaves differently with indexing when nested within a $and.  This was part of the specced behavior of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3192&quot; title=&quot;allow nesting $or within $and&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3192&quot;&gt;&lt;del&gt;SERVER-3192&lt;/del&gt;&lt;/a&gt;.  Adding index handling is &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3327&quot; title=&quot;use indexes for nested $or clauses&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3327&quot;&gt;&lt;del&gt;SERVER-3327&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
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