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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-34714] An $or query with children which are all trivially false incorrectly optimizes</title>
                <link>https://jira.mongodb.org/browse/SERVER-34714</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;A query such as the following will never match any documents:&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: #008200; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;// {a: {$all: []}} will never match.&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;db.foo.find({$or: [{a: {$all: []}}]});&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p&gt;The server will incorrectly optimize that query which can lead to an bug in planning.&lt;/p&gt;</description>
                <environment></environment>
        <key id="535140">SERVER-34714</key>
            <summary>An $or query with children which are all trivially false incorrectly optimizes</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="charlie.swanson@mongodb.com">Charlie Swanson</assignee>
                                    <reporter username="charlie.swanson@mongodb.com">Charlie Swanson</reporter>
                        <labels>
                    </labels>
                <created>Fri, 27 Apr 2018 13:41:01 +0000</created>
                <updated>Sun, 29 Oct 2023 22:32:18 +0000</updated>
                            <resolved>Tue, 1 May 2018 20:08:40 +0000</resolved>
                                    <version>3.7.7</version>
                                    <fixVersion>3.6.5</fixVersion>
                    <fixVersion>4.0.0-rc0</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1889579" author="xgen-internal-githook" created="Fri, 11 May 2018 20:49:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Charlie Swanson&apos;, &apos;email&apos;: &apos;charlie.swanson@mongodb.com&apos;, &apos;username&apos;: &apos;cswanson310&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34714&quot; title=&quot;An $or query with children which are all trivially false incorrectly optimizes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34714&quot;&gt;&lt;del&gt;SERVER-34714&lt;/del&gt;&lt;/a&gt; Test an $or with all children always false.&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5550703f7ff9f0dc12f508f87cfb98c3bfa2c222&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5550703f7ff9f0dc12f508f87cfb98c3bfa2c222&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1879585" author="xgen-internal-githook" created="Tue, 1 May 2018 20:08:25 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;charlie.swanson@mongodb.com&apos;, &apos;name&apos;: &apos;Charlie Swanson&apos;, &apos;username&apos;: &apos;cswanson310&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34714&quot; title=&quot;An $or query with children which are all trivially false incorrectly optimizes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34714&quot;&gt;&lt;del&gt;SERVER-34714&lt;/del&gt;&lt;/a&gt; Optimize $or with all always-false children to $alwaysFalse&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/bd0e35897b8a43d4590e23db849a1106abe9c44b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/bd0e35897b8a43d4590e23db849a1106abe9c44b&lt;/a&gt;&lt;/p&gt;</comment>
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