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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-13436] Allow creating/using dollar-sign prefixed field names</title>
                <link>https://jira.mongodb.org/browse/SERVER-13436</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;It is currently not possible to handle field names with dollar signs in aggregation (e.g. in $project). However, there are cases where this is perfectly valid, e.g. when trying to aggregate over system.profile, where queries and all their operators are treated as data.&lt;/p&gt;

&lt;p&gt;For example, if system.profile contains:&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;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 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;{&quot;$query&quot; : { &quot;date&quot; : { &quot;$gte&quot; : ISODate(&quot;...&quot;) } } }&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p&gt;There is no way to project the $gte field. The only workaround, currently, seems to be to dump the collection to BSON or JSON, and replace &quot;$gte&quot; with &quot;dgte&quot; or something similar, then aggregate over the modified collection.&lt;/p&gt;</description>
                <environment></environment>
        <key id="128779">SERVER-13436</key>
            <summary>Allow creating/using dollar-sign prefixed field names</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="andre.spiegel@mongodb.com">Andre Spiegel</reporter>
                        <labels>
                    </labels>
                <created>Tue, 1 Apr 2014 15:37:25 +0000</created>
                <updated>Sat, 9 Jul 2016 21:09:33 +0000</updated>
                            <resolved>Wed, 2 Apr 2014 04:54:26 +0000</resolved>
                                    <version>2.6.0-rc2</version>
                                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="532117" author="dan@10gen.com" created="Wed, 2 Apr 2014 04:54:26 +0000"  >&lt;p&gt;dup of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-8436&quot; title=&quot;Aggregation pipeline cannot process system.profile doc fields with $ prefixes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-8436&quot;&gt;SERVER-8436&lt;/a&gt;&lt;/p&gt;</comment>
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