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    <language>en-us</language>    <build-info>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-12409] db.coll.remove() should not default to db.coll.remove({})</title>
                <link>https://jira.mongodb.org/browse/SERVER-12409</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The argument processing of db.coll.remove() seems to be modelled on db.coll.find().  However, the expected semantics of removal are substantially different to querying.&lt;/p&gt;

&lt;p&gt;Semantically, the query parameter to find() is &lt;em&gt;subtractive&lt;/em&gt; - as terms are added to the query, documents which don&apos;t have a matching form are elided from the set of documents returned.  The query parameter is like a sieve, with an empty specification indicating no limitation on the form of documents to be returned.  In the absence of any specification, defaulting to an &quot;open sieve&quot; and returning all documents is more likely to be useful than a &quot;closed sieve&quot; which returns nothing or throws an error.&lt;/p&gt;

&lt;p&gt;However, I would argue that most users are used to remove/delete operations generally being semantically &lt;em&gt;additive&lt;/em&gt; - only documents which match the query are added to the set of documents to be deleted.  Given this, the default in the absence of a remove specification should be no documents, not all documents.  Users expect this behavior because the highly destructive nature of removal/deletion means that conservative defaults are more prudent.  The consequences of accidentally typing db.coll.find() are trivial, but the same cannot (currently) be said for db.coll.remove().&lt;/p&gt;

&lt;p&gt;If users truly mean to remove all documents in a collection, it is not a significant imposition to require them to state this explicitly by running db.coll.remove({}).  db.coll.remove() should not remove anything (nothing specified -&amp;gt; nothing removed).&lt;/p&gt;

&lt;p&gt;The analogous behavior with Unix command line tools (which are notoriously unforgiving) is that /bin/ls defaults to *, but /bin/rm does not.  If users actually want to delete all files in a directory, they have to do &quot;rm *&quot;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="106641">SERVER-12409</key>
            <summary>db.coll.remove() should not default to db.coll.remove({})</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="dan@mongodb.com">Daniel Pasette</assignee>
                                    <reporter username="kevin.pulo@mongodb.com">Kevin Pulo</reporter>
                        <labels>
                            <label>remove</label>
                            <label>usability</label>
                    </labels>
                <created>Sat, 18 Jan 2014 06:49:50 +0000</created>
                <updated>Sun, 9 Mar 2014 20:31:34 +0000</updated>
                            <resolved>Mon, 10 Feb 2014 04:55:21 +0000</resolved>
                                                    <fixVersion>2.6.0-rc0</fixVersion>
                                    <component>Shell</component>
                                        <votes>2</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="494271" author="xgen-internal-githook" created="Wed, 5 Feb 2014 23:07:20 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;monkey101&apos;, u&apos;name&apos;: u&apos;Dan Pasette&apos;, u&apos;email&apos;: u&apos;dan@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12409&quot; title=&quot;db.coll.remove() should not default to db.coll.remove({})&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12409&quot;&gt;&lt;del&gt;SERVER-12409&lt;/del&gt;&lt;/a&gt; db.coll.remove() shell helper requires a query predicate&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a56fff30fbe28b90ad3526fb285dec078be72979&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a56fff30fbe28b90ad3526fb285dec078be72979&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="491952" author="jesse" created="Sat, 1 Feb 2014 21:31:55 +0000"  >&lt;p&gt;If we make this change, remove() with no arguments should raise an error immediately: &quot;a query is required, for example: remove({})&quot;.&lt;/p&gt;</comment>
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            <issuekey id="116884">DOCS-2835</issuekey>
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