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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-11718] Allow aggregation framework to optionally pass through non-arrays through $unwind</title>
                <link>https://jira.mongodb.org/browse/SERVER-11718</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Apparently there are cases where fields can be single values or they can be arrays of values.&lt;/p&gt;

&lt;p&gt;There&apos;s cases where you want to normalize it and since there is no way to turn a single element into array of one in aggregation (if there was that would help this use case) then maybe there can be a way to call $unwind on arrays without non-array documents causing an error &quot;Value at end of $unwind field path &apos;$a&apos; must be an Array&quot;.&lt;/p&gt;

&lt;p&gt;To not change current behavior maybe it can be an optional parameter to $unwind $ignoreNonArrays:true or something like that.&lt;/p&gt;</description>
                <environment></environment>
        <key id="98527">SERVER-11718</key>
            <summary>Allow aggregation framework to optionally pass through non-arrays through $unwind</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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>
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                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="asya.kamsky@mongodb.com">Asya Kamsky</reporter>
                        <labels>
                    </labels>
                <created>Fri, 15 Nov 2013 08:31:33 +0000</created>
                <updated>Fri, 15 Nov 2013 13:54:55 +0000</updated>
                            <resolved>Fri, 15 Nov 2013 13:54:55 +0000</resolved>
                                    <version>2.5.3</version>
                                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
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