<!-- 
RSS generated by JIRA (9.7.1#970001-sha1:2222b88b221c4928ef0de3161136cc90c8356a66) at Thu Feb 08 03:06:40 UTC 2024

It is possible to restrict the fields that are returned in this document by specifying the 'field' parameter in your request.
For example, to request only the issue key and summary append 'field=key&field=summary' to the URL of your request.
-->
<rss version="0.92" >
<channel>
    <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>
    </build-info>


<item>
            <title>[SERVER-4674] aggregation:  treat undefined values the same as null values</title>
                <link>https://jira.mongodb.org/browse/SERVER-4674</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;$group currently doesn&apos;t allow for the grouping key to be undefined.  The attached script demonstrates the problem, yielding this error for the last two cases:&lt;/p&gt;

&lt;p&gt;{&lt;br/&gt;
        &quot;errmsg&quot; : &quot;exception: the _id field for a group must not be undefined&quot;,&lt;br/&gt;
        &quot;code&quot; : 15956,&lt;br/&gt;
        &quot;ok&quot; : 0&lt;br/&gt;
}&lt;/p&gt;</description>
                <environment></environment>
        <key id="28225">SERVER-4674</key>
            <summary>aggregation:  treat undefined values the same as null values</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="mathias@mongodb.com">Mathias Stearn</assignee>
                                    <reporter username="cwestin">Chris Westin</reporter>
                        <labels>
                    </labels>
                <created>Thu, 12 Jan 2012 23:19:15 +0000</created>
                <updated>Mon, 11 Jul 2016 18:32:50 +0000</updated>
                            <resolved>Tue, 3 Jul 2012 21:27:56 +0000</resolved>
                                    <version>2.1.2</version>
                                    <fixVersion>2.2.0-rc0</fixVersion>
                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="139342" author="auto" created="Tue, 3 Jul 2012 21:26:03 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-06-29T12:41:38-07:00&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;}
&lt;p&gt;Message: Treat undefined as null in aggregation rather than erroring &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4674&quot; title=&quot;aggregation:  treat undefined values the same as null values&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4674&quot;&gt;&lt;del&gt;SERVER-4674&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/45b3dae6faea0dbf223acc8e53c34eb11b071fdc&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/45b3dae6faea0dbf223acc8e53c34eb11b071fdc&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="139341" author="auto" created="Tue, 3 Jul 2012 21:26:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-06-29T12:22:44-07:00&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;}
&lt;p&gt;Message: Make test more clear &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4674&quot; title=&quot;aggregation:  treat undefined values the same as null values&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4674&quot;&gt;&lt;del&gt;SERVER-4674&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ce91fa9de46717ae0d1bbbf85046558ff02f527f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ce91fa9de46717ae0d1bbbf85046558ff02f527f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="94040" author="auto" created="Thu, 1 Mar 2012 05:01:38 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;cwestin&apos;, u&apos;name&apos;: u&apos;U-tellus\\cwestin&apos;, u&apos;email&apos;: u&apos;cwestin@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4674&quot; title=&quot;aggregation:  treat undefined values the same as null values&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4674&quot;&gt;&lt;del&gt;SERVER-4674&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d5bcc464a0479a2a07ab5299dc2b34c760857ea5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d5bcc464a0479a2a07ab5299dc2b34c760857ea5&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="79492" author="cwestin" created="Thu, 12 Jan 2012 23:21:36 +0000"  >&lt;p&gt;At the moment, you can work around this by preceding the $group with a $project in which you use a $ifNull to supply a value; $ifNull does treat undefined and null as the same.  However, it makes me a bit nervous to do the same for group &amp;#8211; I had a demonstrative test case come to me, but I&apos;ve forgotten it; hopefully it will come back to me before I get to this, and we can decide if we care about it or not.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10011">
                    <name>Depends</name>
                                                                <inwardlinks description="is depended on by">
                                        <issuelink>
            <issuekey id="10927">SERVER-447</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10010">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="27854">SERVER-4638</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
                <attachments>
                            <attachment id="14399" name="unwind1.js" size="717" author="cwestin" created="Thu, 12 Jan 2012 23:19:15 +0000"/>
                    </attachments>
                <subtasks>
                    </subtasks>
                <customfields>
                                                <customfield id="customfield_10050" key="com.atlassian.jira.toolkit:comments">
                        <customfieldname># Replies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>4.0</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                <customfield id="customfield_10055" key="com.atlassian.jira.ext.charting:firstresponsedate">
                        <customfieldname>Date of 1st Reply</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>Thu, 1 Mar 2012 05:01:38 +0000</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10052" key="com.atlassian.jira.toolkit:dayslastcommented">
                        <customfieldname>Days since reply</customfieldname>
                        <customfieldvalues>
                                        11 years, 33 weeks, 1 day ago
    
                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_18254" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Dependencies</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue><![CDATA[]]></customfieldvalue>


                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_15850" key="com.atlassian.jira.plugins.jira-development-integration-plugin:devsummary">
                        <customfieldname>Development</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    <customfield id="customfield_10057" key="com.atlassian.jira.toolkit:lastusercommented">
                        <customfieldname>Last comment by Customer</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>true</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                            <customfield id="customfield_10056" key="com.atlassian.jira.toolkit:lastupdaterorcommenter">
                        <customfieldname>Last commenter</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>ramon.fernandez@mongodb.com</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_11151" key="com.atlassian.jira.toolkit:LastCommentDate">
                        <customfieldname>Last public comment date</customfieldname>
                        <customfieldvalues>
                            11 years, 33 weeks, 1 day ago
                        </customfieldvalues>
                    </customfield>
                                                                                                                        <customfield id="customfield_10000" key="com.atlassian.jira.plugin.system.customfieldtypes:radiobuttons">
                        <customfieldname>Old_Backport</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="10000"><![CDATA[No]]></customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10032" key="com.atlassian.jira.plugin.system.customfieldtypes:select">
                        <customfieldname>Operating System</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="10026"><![CDATA[ALL]]></customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                <customfield id="customfield_10051" key="com.atlassian.jira.toolkit:participants">
                        <customfieldname>Participants</customfieldname>
                        <customfieldvalues>
                                        <customfieldvalue>auto</customfieldvalue>
            <customfieldvalue>cwestin</customfieldvalue>
            <customfieldvalue>mathias@mongodb.com</customfieldvalue>
    
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                        <customfield id="customfield_14254" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Product Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|hrogzr:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                <customfield id="customfield_12550" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>2|hrgbbr:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10558" key="com.pyxis.greenhopper.jira:gh-global-rank">
                        <customfieldname>Rank (Obsolete)</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>8744</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                            <customfield id="customfield_23361" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Requested By</customfieldname>
                        <customfieldvalues>
                                

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                <customfield id="customfield_10166" key="com.atlassian.jira.plugin.system.customfieldtypes:radiobuttons">
                        <customfieldname>Tests Written</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="10154"><![CDATA[Complete]]></customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                <customfield id="customfield_10053" key="com.atlassian.jira.ext.charting:timeinstatus">
                        <customfieldname>Time In Status</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <customfield id="customfield_22870" key="com.onresolve.jira.groovy.groovyrunner:scripted-field">
                        <customfieldname>Triagers</customfieldname>
                        <customfieldvalues>
                                

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                    <customfield id="customfield_14350" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>serverRank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>1|hrjagn:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                    </customfields>
    </item>
</channel>
</rss>