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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-12199] Add an operator that matches an entire document</title>
                <link>https://jira.mongodb.org/browse/SERVER-12199</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Problem: it&apos;s occasionally desirable to be able to specify query that matches a whole document, but the query language doesn&apos;t support it (anyway, I can&apos;t think of one).&lt;/p&gt;

&lt;p&gt;Proposal: add a query operator that matches if and only if a document has all the fields and no extra ones. For example, it might look like this:&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;   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.foo.find({ &quot;$whole&quot; : { &quot;_id&quot; : 123 , &quot;a&quot; : &quot;hello&quot; , &quot;b&quot; : &quot;world&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;This would match only documents having the fields &quot;_id&quot;, &quot;a&quot;, and &quot;b&quot;, but no other fields; and presumably it would match only if the document had those three fields in that order.&lt;/p&gt;

&lt;p&gt;Note that this would make certain updates easier to express, e.g., for the update-if-current idiom.&lt;/p&gt;

</description>
                <environment></environment>
        <key id="103678">SERVER-12199</key>
            <summary>Add an operator that matches an entire document</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</priority>
                        <status id="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-optimization">Backlog - Query Optimization</assignee>
                                    <reporter username="richard.kreuter">Richard Kreuter</reporter>
                        <labels>
                    </labels>
                <created>Tue, 24 Dec 2013 16:12:03 +0000</created>
                <updated>Tue, 6 Dec 2022 05:13:46 +0000</updated>
                                                                            <component>Querying</component>
                                        <votes>1</votes>
                                    <watches>10</watches>
                                                                                                                <comments>
                            <comment id="1628716" author="asya" created="Fri, 21 Jul 2017 15:56:52 +0000"  >&lt;p&gt;Noting here that this is possible using aggregation by comparing &quot;$$ROOT&quot; and specified object.  Similar to a workaround described in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30197&quot; title=&quot;$eq-ordered and $eq-unordered&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30197&quot;&gt;SERVER-30197&lt;/a&gt;:&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.foo.aggregate([&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;   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;$match&quot; : { &quot;_id&quot; : 123 , &quot;a&quot; : &quot;hello&quot; , &quot;b&quot; : &quot;world&quot; } },&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    {&quot;$addFields&quot; : {__keep:{$eq:[ {$literal: { &quot;_id&quot; : 123 , &quot;a&quot; : &quot;hello&quot; , &quot;b&quot; : &quot;world&quot; } }, &quot;$$ROOT&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;   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;$match&quot; : {__keep:true}}&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;]);&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;
</comment>
                            <comment id="1624800" author="karo" created="Tue, 18 Jul 2017 15:33:24 +0000"  >&lt;p&gt;@David: Awesome. Thanks!&lt;/p&gt;</comment>
                            <comment id="1624780" author="david.storch" created="Tue, 18 Jul 2017 15:22:36 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=karo&quot; class=&quot;user-hover&quot; rel=&quot;karo&quot;&gt;karo&lt;/a&gt;, assuming that you do not consider the ordering of the fields significant, this will be possible to express using JSON Schema. We are currently working on adding support for a &lt;tt&gt;$jsonSchema&lt;/tt&gt; operator in the match language under &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30191&quot; title=&quot;Add JSON Schema support for document validation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30191&quot;&gt;&lt;del&gt;SERVER-30191&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="1624248" author="karo" created="Mon, 17 Jul 2017 22:43:17 +0000"  >&lt;p&gt;If I am not mistaken it is still not possible to express this. For arrays we can use $size, but for objects there is no way to ensure that there are no extra values?&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="404927">SERVER-30196</issuekey>
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