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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-2588] Piping Query Results</title>
                <link>https://jira.mongodb.org/browse/SERVER-2588</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Ability to Pipe the results from one Query to another one (all server side).&lt;/p&gt;

&lt;p&gt;db.purchaseOrders.find(&lt;/p&gt;
{VenderName : &quot;10gen&quot;}
&lt;p&gt;,&lt;/p&gt;
{ponumber:1}
&lt;p&gt;).pipeTo().poItems.find(&lt;/p&gt;
{ponumber :&quot;$pipe.ponumber&quot;}
&lt;p&gt;)&lt;/p&gt;

&lt;p&gt;to really spice things up you could add support for mapReduce piping as well (and the ability to mix them in any combination for as many times wanted)&lt;/p&gt;

&lt;p&gt;db.purchaseOrders.mapReduce(...).pipeTo().poItems.find(...).pipeTo().venders.mapReduce(...)&lt;/p&gt;

&lt;p&gt;preferably not to have the .pipTo() method call necessary. like so&lt;br/&gt;
db.purchaseOrders.mapReduce(...).poItems.find(...).venders.mapReduce(...)&lt;/p&gt;


</description>
                <environment></environment>
        <key id="14808">SERVER-2588</key>
            <summary>Piping Query Results</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="4">Incomplete</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="middletommy">Thomas Tucker</reporter>
                        <labels>
                    </labels>
                <created>Fri, 18 Feb 2011 17:34:35 +0000</created>
                <updated>Wed, 10 Dec 2014 23:18:33 +0000</updated>
                            <resolved>Tue, 2 Apr 2013 19:47:11 +0000</resolved>
                                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="304438" author="eliot" created="Tue, 2 Apr 2013 19:47:11 +0000"  >&lt;p&gt;I think a lot of the intention here is covered by the aggregation framework (which came out about 18 months after this ticket was created)&lt;/p&gt;</comment>
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