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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-1085] slice doesn&apos;t work for nested arrays</title>
                <link>https://jira.mongodb.org/browse/SERVER-1085</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Performing slice on an array of arrays results in unexpected behavior. The returned slice is altering the elements.&lt;/p&gt;

&lt;p&gt;Examples:&lt;br/&gt;
&amp;gt; db.slicetest.insert(&lt;/p&gt;
{items: [[&quot;a&quot;, 1], [&quot;b&quot;, 2], [&quot;c&quot;, 3]]}
&lt;p&gt;) &lt;br/&gt;
&amp;gt; db.slicetest.find()&lt;/p&gt;
{ &quot;_id&quot; : ObjectId(&quot;4be05dbad9e167ecfebc17ce&quot;), &quot;items&quot; : [ [ &quot;a&quot;, 1 ], [ &quot;b&quot;, 2 ], [ &quot;c&quot;, 3 ] ] }

&lt;p&gt;&amp;gt; db.slicetest.find({}, {items: {$slice: 1}})&lt;/p&gt;
{ &quot;_id&quot; : ObjectId(&quot;4be05dbad9e167ecfebc17ce&quot;), &quot;items&quot; : [ [ &quot;a&quot; ] ] }

&lt;p&gt;This one is correct:&lt;br/&gt;
&amp;gt; db.slicetest.find({}, {items: {$slice: 2}})&lt;/p&gt;
{ &quot;_id&quot; : ObjectId(&quot;4be05dbad9e167ecfebc17ce&quot;), &quot;items&quot; : [ [ &quot;a&quot;, 1 ], [ &quot;b&quot;, 2 ] ] }

&lt;p&gt;&amp;gt; db.slicetest.find({}, {items: {$slice: &lt;span class=&quot;error&quot;&gt;&amp;#91;1,1&amp;#93;&lt;/span&gt;}})&lt;/p&gt;
{ &quot;_id&quot; : ObjectId(&quot;4be05dbad9e167ecfebc17ce&quot;), &quot;items&quot; : [ [ 2 ] ] }
&lt;p&gt;&amp;gt; db.slicetest.find({}, {items: {$slice: &lt;span class=&quot;error&quot;&gt;&amp;#91;2,1&amp;#93;&lt;/span&gt;}})&lt;/p&gt;
{ &quot;_id&quot; : ObjectId(&quot;4be05dbad9e167ecfebc17ce&quot;), &quot;items&quot; : [ [ ] ] }
&lt;p&gt;&amp;gt; db.slicetest.find({}, {items: {$slice: &lt;span class=&quot;error&quot;&gt;&amp;#91;1,2&amp;#93;&lt;/span&gt;}}) &lt;/p&gt;
{ &quot;_id&quot; : ObjectId(&quot;4be05dbad9e167ecfebc17ce&quot;), &quot;items&quot; : [ [ 2 ], [ 3 ] ] }

&lt;p&gt;Issue reported on mongo-user:&lt;br/&gt;
&lt;a href=&quot;http://groups.google.com/group/mongodb-user/browse_thread/thread/e84758d6a77ead8b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://groups.google.com/group/mongodb-user/browse_thread/thread/e84758d6a77ead8b&lt;/a&gt;&lt;/p&gt;</description>
                <environment>Linux 2.6.31-21-generic #59-Ubuntu SMP x86_64 GNU/Linux</environment>
        <key id="11893">SERVER-1085</key>
            <summary>slice doesn&apos;t work for nested arrays</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="9">Done</resolution>
                                        <assignee username="mathias@mongodb.com">Mathias Stearn</assignee>
                                    <reporter username="crudson">Doug Hudson</reporter>
                        <labels>
                    </labels>
                <created>Tue, 4 May 2010 13:52:22 +0000</created>
                <updated>Tue, 12 Jul 2016 00:27:15 +0000</updated>
                            <resolved>Wed, 5 May 2010 15:54:52 +0000</resolved>
                                    <version>1.5.1</version>
                                    <fixVersion>1.5.2</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="14078" author="auto" created="Wed, 5 May 2010 15:52:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;login&apos;: &apos;RedBeard0531&apos;, &apos;name&apos;: &apos;Mathias Stearn&apos;, &apos;email&apos;: &apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: Only $slice outer arrays when nested. &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1085&quot; title=&quot;slice doesn&amp;#39;t work for nested arrays&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1085&quot;&gt;&lt;del&gt;SERVER-1085&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;http://github.com/mongodb/mongo/commit/9e6121b6cb59312f3106b55a2b8c4852cedcbefd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://github.com/mongodb/mongo/commit/9e6121b6cb59312f3106b55a2b8c4852cedcbefd&lt;/a&gt;&lt;/p&gt;</comment>
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