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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-30602] provide a simple $eq (binary, lexical) expression for comparison independent of collation</title>
                <link>https://jira.mongodb.org/browse/SERVER-30602</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;It&apos;s possible that one needs to make binary/simple comparison of two fields even in the context of a collection/operation with non-simple collation.&lt;/p&gt;

&lt;p&gt;In match language it can be faked by using left and right anchored regex, but there is no way to do this in aggregation.  Having some kind of &lt;tt&gt;&quot;$binEq&quot;&lt;/tt&gt; expression would provide it for aggregation (and if it&apos;s available in match that would also be useful).&lt;/p&gt;</description>
                <environment></environment>
        <key id="415135">SERVER-30602</key>
            <summary>provide a simple $eq (binary, lexical) expression for comparison independent of collation</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>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="asya.kamsky@mongodb.com">Asya Kamsky</reporter>
                        <labels>
                    </labels>
                <created>Thu, 10 Aug 2017 19:46:19 +0000</created>
                <updated>Tue, 6 Dec 2022 03:54:34 +0000</updated>
                            <resolved>Fri, 20 Apr 2018 14:58:03 +0000</resolved>
                                                                    <component>Aggregation Framework</component>
                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>10</watches>
                                                                                                                <comments>
                            <comment id="1647538" author="ian@10gen.com" created="Mon, 14 Aug 2017 14:39:40 +0000"  >&lt;p&gt;We&apos;re going to delay decision on this particular implementation pending review of the discussion above and how we want to solve that problem.  The more complete solution would be per-predicate collations.&lt;/p&gt;</comment>
                            <comment id="1645547" author="asya" created="Thu, 10 Aug 2017 19:54:18 +0000"  >&lt;p&gt;This came up related to dynamic view definitions, since we can have two usernames (or roles) that differ only by case or secondary characteristic and would compare equal with some collations, we need a way to compare usernames that&apos;s not collation sensitive regardless of default collation of underlying collection/view.&lt;/p&gt;</comment>
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