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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <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-4708] &quot;{ $pull : { field : _value } }&quot; support removes the first occurrences of value from field, if field is an array.</title>
                <link>https://jira.mongodb.org/browse/SERVER-4708</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;{ $pull : &lt;/p&gt;
{ field : _value }
&lt;p&gt; }  will removes all occurrences of value from field, if field is an array.&lt;br/&gt;
In my project, I need { $pull : &lt;/p&gt;
{ field : _value }
&lt;p&gt; }  removes the first occurrences of value from field.&lt;br/&gt;
For example:&lt;br/&gt;
document:&lt;/p&gt;
{
&quot;_id&quot;:&quot;123&quot;, 
&quot;boys&quot;:[ 
{&quot;name&quot;:&quot;jhon&quot;}
&lt;p&gt;, &lt;/p&gt;
{&quot;name&quot;:&quot;jhon&quot;}
&lt;p&gt;, &lt;/p&gt;
{&quot;name&quot;:&quot;gavin&quot;} 
&lt;p&gt;]  &lt;br/&gt;
}&lt;br/&gt;
As you see, the array &quot;boys&quot; has three elements, and the first is same &lt;br/&gt;
to the second. If I do {$pull:{&quot;name&quot;:&quot;jhon&quot;}}, then the first and second element will be removed.&lt;br/&gt;
Actually, I just want to remove the first element(left the second element and the third element).&lt;/p&gt;</description>
                <environment>platform: redhat 6.1. mongodb version: 2.0.2</environment>
        <key id="28565">SERVER-4708</key>
            <summary>&quot;{ $pull : { field : _value } }&quot; support removes the first occurrences of value from field, if field is an array.</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</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="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="genliu">gavinliu</reporter>
                        <labels>
                            <label>update</label>
                    </labels>
                <created>Wed, 18 Jan 2012 08:18:36 +0000</created>
                <updated>Tue, 6 Dec 2022 05:37:41 +0000</updated>
                            <resolved>Sun, 13 Aug 2017 20:45:42 +0000</resolved>
                                    <version>2.0.2</version>
                                                    <component>Write Ops</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="486096" author="asya" created="Wed, 22 Jan 2014 22:31:52 +0000"  >&lt;p&gt;As a work-around, it&apos;s possible to make a positional update to the item you want to remove (to make it unique) and then $pull by that attribute.&lt;/p&gt;

&lt;p&gt;Example:&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;
		&lt;tbody &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-top: 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.coll.update({&quot;_id&quot;:&quot;123&quot;, &quot;boys.name&quot;:&quot;jhon&quot;}, {$set:{&quot;boys.$.name&quot;:&quot;THIS&quot;}});&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.coll.update({&quot;_id&quot;:&quot;123&quot;}, {$pull:{&quot;boys.name&quot;:&quot;THIS&quot;}})&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;If the element you want to remove happens to be first in array (like it is in this example) you ca use $pop operator with -1 (to remove one element from the front).&lt;/p&gt;</comment>
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            <issuekey id="11775">SERVER-1014</issuekey>
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