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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-12376] $skip and $limit should be moved before $project</title>
                <link>https://jira.mongodb.org/browse/SERVER-12376</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;While this is performance-neutral on its own, it enables other optimizations such as combining sort and limit. This should probably be done right before Optimizations::Local::moveLimitBeforeSkip.&lt;/p&gt;</description>
                <environment></environment>
        <key id="106282">SERVER-12376</key>
            <summary>$skip and $limit should be moved before $project</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="james.cohan">James Cohan</assignee>
                                    <reporter username="mathias@mongodb.com">Mathias Stearn</reporter>
                        <labels>
                            <label>dnsf</label>
                            <label>neweng</label>
                    </labels>
                <created>Thu, 16 Jan 2014 02:56:44 +0000</created>
                <updated>Sun, 3 Jul 2016 09:15:05 +0000</updated>
                            <resolved>Thu, 23 Jul 2015 14:59:12 +0000</resolved>
                                                    <fixVersion>3.1.5</fixVersion>
                                    <component>Aggregation Framework</component>
                    <component>Performance</component>
                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="947084" author="redbeard0531" created="Mon, 22 Jun 2015 16:19:27 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=james.cohan&quot; class=&quot;user-hover&quot; rel=&quot;james.cohan&quot;&gt;james.cohan&lt;/a&gt; At least 2 should be done under a separate ticket. If we don&apos;t get to 1 in this iteration, it should probably be pulled out and handled as a separate ticket.&lt;/p&gt;</comment>
                            <comment id="944636" author="james.cohan" created="Thu, 18 Jun 2015 18:53:11 +0000"  >&lt;p&gt;Leaving this ticket open for now. We still want to do two things:&lt;br/&gt;
1. Combine logic for all pipeline optimizations that involve swapping stages into one function.&lt;br/&gt;
2. Prevent $project&apos;s from being sent to shard and merge pipes.&lt;/p&gt;</comment>
                            <comment id="944617" author="xgen-internal-githook" created="Thu, 18 Jun 2015 18:43:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;jamesfcohan&apos;, u&apos;name&apos;: u&apos;James Cohan&apos;, u&apos;email&apos;: u&apos;james.cohan@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12376&quot; title=&quot;$skip and $limit should be moved before $project&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12376&quot;&gt;&lt;del&gt;SERVER-12376&lt;/del&gt;&lt;/a&gt; Move $skip and $limit before $project in aggregation pipeline&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d424a92eb1050023c7f3627a2ff958ff7d37488e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d424a92eb1050023c7f3627a2ff958ff7d37488e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="927721" author="charlie.swanson" created="Fri, 29 May 2015 19:08:13 +0000"  >&lt;p&gt;Also, we should clean up the implementations of the other moving optimizations, and possibly look to combine the logic of all three to one place.&lt;/p&gt;</comment>
                    </comments>
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                            <issuelinktype id="10010">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="213326">SERVER-19152</issuekey>
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            <issuekey id="26713">SERVER-4506</issuekey>
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