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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-56450] Allow range-based windows with descending sortBy</title>
                <link>https://jira.mongodb.org/browse/SERVER-56450</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="1695158">SERVER-56450</key>
            <summary>Allow range-based windows with descending sortBy</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-optimization">Backlog - Query Optimization</assignee>
                                    <reporter username="samuel.mercier@mongodb.com">Sam Mercier</reporter>
                        <labels>
                    </labels>
                <created>Wed, 28 Apr 2021 22:14:58 +0000</created>
                <updated>Tue, 6 Dec 2022 01:21:59 +0000</updated>
                                                                                                <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="3746560" author="charlie.swanson" created="Thu, 29 Apr 2021 14:26:20 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=nicholas.zolnierz&quot; class=&quot;user-hover&quot; rel=&quot;nicholas.zolnierz&quot;&gt;nicholas.zolnierz&lt;/a&gt;&#160;can you add this as an open question somewhere that we&apos;ll remember to discuss before project closeout?&lt;/p&gt;</comment>
                            <comment id="3745479" author="samuel.mercier" created="Wed, 28 Apr 2021 22:16:30 +0000"  >&lt;p&gt;We&apos;ve disallowed range-based windows because of the ambiguity as to whether to allow ranges of &lt;span class=&quot;error&quot;&gt;&amp;#91;3,1&amp;#93;&lt;/span&gt; or &lt;span class=&quot;error&quot;&gt;&amp;#91;1,3&amp;#93;&lt;/span&gt; as non-empty windows. Giving an error message to the user to allow them to specify a proper non-empty window should be a way of alleviating this ambiguity of semantic meaning.&lt;/p&gt;

&lt;p&gt;Another possible solution could be to change the syntax of range specification to alleviate this ambiguity entirely changing the range specification from &lt;span class=&quot;error&quot;&gt;&amp;#91;3,1&amp;#93;&lt;/span&gt; to &lt;/p&gt;
{upper: 3, lower: 1}
&lt;p&gt; or something similar.&lt;/p&gt;</comment>
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