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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-4080] Custom Sort Function</title>
                <link>https://jira.mongodb.org/browse/SERVER-4080</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Similar concept to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4079&quot; title=&quot;Computed Fields&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4079&quot;&gt;&lt;del&gt;SERVER-4079&lt;/del&gt;&lt;/a&gt;. Also related to the needs behind &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-458&quot; title=&quot;JavaScript $function in update&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-458&quot;&gt;&lt;del&gt;SERVER-458&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Allow a custom compare function for sorting.&lt;/p&gt;

&lt;p&gt;db.people.find().sort((_foo_bar_baz: function(a, b) {return (a.foo + a.bar + a.baz) - (b.foo + b.bar + b.baz);}})&lt;/p&gt;

&lt;p&gt;This might also make sense (in addition to the previous syntax, not instead).&lt;br/&gt;
db.people.find().sort(function(a, b) &lt;/p&gt;
{return (a.foo + a.bar + a.baz) - (b.foo + b.bar + b.baz);}
&lt;p&gt;)&lt;/p&gt;

&lt;p&gt;I keep wanting this. One case that keeps popping up is sorting tabular data. Often times columns are computed from the contents of a couple of fields and the best sort order in the mind of the user will not actually have a simple relationship to any of the stored fields. The current workaround is to store pre-computed fields where possible, and disable sorting where this is not possible (or not practical), but precomputed fields are often not a good option (especially when the sort is rare).&lt;/p&gt;</description>
                <environment></environment>
        <key id="23678">SERVER-4080</key>
            <summary>Custom Sort Function</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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="bugslayer">John Crenshaw</reporter>
                        <labels>
                    </labels>
                <created>Sun, 16 Oct 2011 00:26:08 +0000</created>
                <updated>Sat, 25 Feb 2012 14:33:54 +0000</updated>
                            <resolved>Tue, 18 Oct 2011 02:53:51 +0000</resolved>
                                    <version>2.0.0</version>
                                                    <component>JavaScript</component>
                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="61052" author="eliot" created="Tue, 18 Oct 2011 02:53:51 +0000"  >&lt;p&gt;See &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-153&quot; title=&quot;javascript sort helper for custom sorting / indexing&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-153&quot;&gt;SERVER-153&lt;/a&gt;&lt;/p&gt;</comment>
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