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    <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>[DOCS-13623] Investigate changes in SERVER-46115: Implement &apos;let&apos; parameters to aggregate commands</title>
                <link>https://jira.mongodb.org/browse/DOCS-13623</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;

    &lt;div class=&quot;panel&quot; style=&quot;background-color: #c2d2c2;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;background-color: #239eb0;&quot;&gt;&lt;b&gt;Downstream Change Summary&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;panelContent&quot; style=&quot;background-color: #c2d2c2;&quot;&gt;
&lt;p&gt;    Added let parameters to the aggregate command.&lt;/p&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;h2&gt;&lt;a name=&quot;DescriptionofLinkedTicket&quot;&gt;&lt;/a&gt;Description of Linked Ticket&lt;/h2&gt;
&lt;p&gt;    See Scope document for syntax. The runtimeConstants mechanism is a suggested existing implementation.&lt;/p&gt;

&lt;p&gt;For this ticket, we are only concerned with an implementation that works in unsharded deployments, and only for the aggregate command, and only for pipelines which don&apos;t use $merge. There is further work tracked in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-46707&quot; title=&quot;Support &amp;#39;let&amp;#39; variables in aggregate command in sharded deployments&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-46707&quot;&gt;&lt;del&gt;SERVER-46707&lt;/del&gt;&lt;/a&gt; and&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-46998&quot; title=&quot;Support &amp;#39;let&amp;#39; variables used within $merge custom pipeline update&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-46998&quot;&gt;&lt;del&gt;SERVER-46998&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;


&lt;h2&gt;&lt;a name=&quot;Scopeofchanges&quot;&gt;&lt;/a&gt;Scope of changes&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;ImpacttoOtherDocs&quot;&gt;&lt;/a&gt;Impact to Other Docs&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;MVP%28WorkandDate%29&quot;&gt;&lt;/a&gt;MVP (Work and Date)&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Resources%28ScopeorDesignDocs%2CInvision%2Cetc.%29&quot;&gt;&lt;/a&gt;Resources (Scope or Design Docs, Invision, etc.)&lt;/h2&gt;
</description>
                <environment></environment>
        <key id="1334547">DOCS-13623</key>
            <summary>Investigate changes in SERVER-46115: Implement &apos;let&apos; parameters to aggregate commands</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="13201">Fixed</resolution>
                                        <assignee username="jason.price@mongodb.com">Jason Price</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                    </labels>
                <created>Thu, 30 Apr 2020 16:28:59 +0000</created>
                <updated>Mon, 13 Nov 2023 18:05:49 +0000</updated>
                            <resolved>Thu, 12 Nov 2020 00:14:58 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                    <fixVersion>Server_Docs_20231030</fixVersion>
                    <fixVersion>Server_Docs_20231106</fixVersion>
                    <fixVersion>Server_Docs_20231105</fixVersion>
                    <fixVersion>Server_Docs_20231113</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3486236" author="xgen-internal-githook" created="Wed, 11 Nov 2020 20:32:35 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jason Price&apos;, &apos;email&apos;: &apos;jason.price@mongodb.com&apos;, &apos;username&apos;: &apos;jason-price-mongodb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13623&quot; title=&quot;Investigate changes in SERVER-46115: Implement &amp;#39;let&amp;#39; parameters to aggregate commands&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13623&quot;&gt;&lt;del&gt;DOCS-13623&lt;/del&gt;&lt;/a&gt; Let parameters in aggregate commands&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/98887750ae0616e8e42d814e3a6316b4ab74f8e9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/98887750ae0616e8e42d814e3a6316b4ab74f8e9&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3482836" author="JIRAUSER1254808" created="Tue, 10 Nov 2020 00:44:32 +0000"  >&lt;p&gt;Must make some adjustments to the text.&lt;/p&gt;</comment>
                            <comment id="3482457" author="xgen-internal-githook" created="Mon, 9 Nov 2020 20:42:26 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jason Price&apos;, &apos;email&apos;: &apos;jason.price@mongodb.com&apos;, &apos;username&apos;: &apos;jason-price-mongodb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13623&quot; title=&quot;Investigate changes in SERVER-46115: Implement &amp;#39;let&amp;#39; parameters to aggregate commands&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13623&quot;&gt;&lt;del&gt;DOCS-13623&lt;/del&gt;&lt;/a&gt; Let parameters in aggregate commands&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/75a711e1f7458457d97d8bc879afc73c8ef6e476&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/75a711e1f7458457d97d8bc879afc73c8ef6e476&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3482453" author="xgen-internal-githook" created="Mon, 9 Nov 2020 20:42:17 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jason Price&apos;, &apos;email&apos;: &apos;jason.price@mongodb.com&apos;, &apos;username&apos;: &apos;jason-price-mongodb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13623&quot; title=&quot;Investigate changes in SERVER-46115: Implement &amp;#39;let&amp;#39; parameters to aggregate commands&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13623&quot;&gt;&lt;del&gt;DOCS-13623&lt;/del&gt;&lt;/a&gt; Add let variables in aggregate commands&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/4aac687824e65f102238ec6f152efb2aa55a25ce&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/4aac687824e65f102238ec6f152efb2aa55a25ce&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3457438" author="xgen-internal-githook" created="Wed, 21 Oct 2020 20:52:33 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jason Price&apos;, &apos;email&apos;: &apos;jason.price@mongodb.com&apos;, &apos;username&apos;: &apos;jason-price-mongodb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13623&quot; title=&quot;Investigate changes in SERVER-46115: Implement &amp;#39;let&amp;#39; parameters to aggregate commands&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13623&quot;&gt;&lt;del&gt;DOCS-13623&lt;/del&gt;&lt;/a&gt; Let parameters in aggregate commands&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/ee2b1a50c529d58ae0eb99c19a06d15d3ddc433c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/ee2b1a50c529d58ae0eb99c19a06d15d3ddc433c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3440387" author="xgen-internal-githook" created="Mon, 12 Oct 2020 20:16:22 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jason Price&apos;, &apos;email&apos;: &apos;jason.price@mongodb.com&apos;, &apos;username&apos;: &apos;jason-price-mongodb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13623&quot; title=&quot;Investigate changes in SERVER-46115: Implement &amp;#39;let&amp;#39; parameters to aggregate commands&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13623&quot;&gt;&lt;del&gt;DOCS-13623&lt;/del&gt;&lt;/a&gt; Add let variables in aggregate commands&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/6506fa79df6661ab39ea122727c46e8edb7522cd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/6506fa79df6661ab39ea122727c46e8edb7522cd&lt;/a&gt;&lt;/p&gt;</comment>
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