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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-2162] support field exclusion for retrieving a subset of fields in a query</title>
                <link>https://jira.mongodb.org/browse/SERVER-2162</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;There is support for retrieving a subset of fields in a find operation:&lt;/p&gt;

&lt;p&gt; db.things.find( &lt;/p&gt;
{ x : 3 }
&lt;p&gt;, &lt;/p&gt;
{ z : 1, y:  1 }
&lt;p&gt; );&lt;/p&gt;

&lt;p&gt;I would like the ability to retrieve all fields except a list of excluded fields, e.g.&lt;/p&gt;

&lt;p&gt; db.things.find( &lt;/p&gt;
{ x : 3 }
&lt;p&gt;, {$exclude : { z : 1, y:  1 }} );&lt;/p&gt;

&lt;p&gt;This would retrieve all fields from matching documents except for z and y.&lt;/p&gt;

&lt;p&gt;The reason this is important for us is because we have several large arrays that we add to every document that we use only for optimizing certain types of searches, but in normal use we don&apos;t need to have those fields returned when we actually perform the searches.&lt;/p&gt;</description>
                <environment></environment>
        <key id="13826">SERVER-2162</key>
            <summary>support field exclusion for retrieving a subset of fields in a query</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="-1">Unassigned</assignee>
                                    <reporter username="jeff_y">Jeff Yemin</reporter>
                        <labels>
                    </labels>
                <created>Tue, 30 Nov 2010 14:39:17 +0000</created>
                <updated>Wed, 1 Dec 2010 21:34:42 +0000</updated>
                            <resolved>Tue, 30 Nov 2010 14:55:30 +0000</resolved>
                                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="20934" author="eliot" created="Wed, 1 Dec 2010 21:34:42 +0000"  >&lt;p&gt;No - it should be 0, sorry.&lt;/p&gt;</comment>
                            <comment id="20921" author="jeff_y" created="Wed, 1 Dec 2010 18:25:02 +0000"  >&lt;p&gt;The example there uses 0, not -1, for exclusion.  Will either work?&lt;/p&gt;</comment>
                            <comment id="20819" author="eliot" created="Tue, 30 Nov 2010 15:30:56 +0000"  >&lt;p&gt;Added a link in advanced.&lt;/p&gt;</comment>
                            <comment id="20818" author="eliot" created="Tue, 30 Nov 2010 15:29:26 +0000"  >&lt;p&gt;Its on here: &lt;br/&gt;
&lt;a href=&quot;http://www.mongodb.org/display/DOCS/Retrieving+a+Subset+of+Fields&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://www.mongodb.org/display/DOCS/Retrieving+a+Subset+of+Fields&lt;/a&gt;&lt;/p&gt;
</comment>
                            <comment id="20817" author="jeff_y" created="Tue, 30 Nov 2010 15:26:37 +0000"  >&lt;p&gt;That is much more elegant.   Can the advanced query doc be updated to reflect this?  It wasn&apos;t obvious to me that you could do this.&lt;/p&gt;</comment>
                            <comment id="20815" author="eliot" created="Tue, 30 Nov 2010 14:55:30 +0000"  >&lt;p&gt;You can do&lt;/p&gt;

&lt;p&gt;.find( { } , &lt;/p&gt;
{ x : -1 }
&lt;p&gt; )&lt;br/&gt;
to exclude x&lt;/p&gt;</comment>
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