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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-54950] Allow wildcard indices with unique constraint</title>
                <link>https://jira.mongodb.org/browse/SERVER-54950</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We are storing documents where users can provide extra metadata. One case of this extra metadata are IDs in their own systems for those documents. This is then used to sync data between multiple systems when federating. For example, document can be like:&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;
&lt;p/&gt;
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&lt;p/&gt;
&lt;p&gt;We would like to use wildcard index on &quot;ids&quot; field, but also require that any value for any field with same name inside the field has to be unique. For the example above, there should be no other document which has for &quot;system1&quot; field value equal to &quot;abc&quot;.&lt;/p&gt;

&lt;p&gt;The issue is that we do not know in advance field names inside &quot;ids&quot; and different users might have different field names.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1639482">SERVER-54950</key>
            <summary>Allow wildcard indices with unique constraint</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="mitar">NOVALUE Mitar</reporter>
                        <labels>
                            <label>query-product-scope-3</label>
                            <label>query-product-urgency-3</label>
                            <label>query-product-value-2</label>
                    </labels>
                <created>Thu, 4 Mar 2021 08:42:02 +0000</created>
                <updated>Thu, 30 Mar 2023 18:23:15 +0000</updated>
                                                                            <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="5292899" author="JIRAUSER1265607" created="Wed, 22 Mar 2023 17:48:28 +0000"  >&lt;p&gt;Since the wildcard index is not wildly used at this point, we suggest to move this to backlog. We can revisit it when we fixed other issues in wildcard index and get more usage.&#160;&lt;/p&gt;</comment>
                            <comment id="5227798" author="mitar" created="Fri, 24 Feb 2023 07:02:51 +0000"  >&lt;p&gt;Yes. Both of those restrictions would be in effect.&lt;/p&gt;</comment>
                            <comment id="5226534" author="asya" created="Thu, 23 Feb 2023 20:11:58 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=mitar&quot; class=&quot;user-hover&quot; rel=&quot;mitar&quot;&gt;mitar&lt;/a&gt; in the example you give, the implication is that no other document would be allowed to have &lt;tt&gt;system2&lt;/tt&gt; value of &lt;tt&gt;123&lt;/tt&gt; is that part of the request?&lt;/p&gt;</comment>
                            <comment id="3651575" author="dmitry.agranat" created="Mon, 8 Mar 2021 11:29:54 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=mitar&quot; class=&quot;user-hover&quot; rel=&quot;mitar&quot;&gt;mitar&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for the detailed example. We&apos;re assigning this ticket to the appropriate team to be evaluated against our currently planned work. Updates will be posted on this ticket as they happen.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Dima&lt;/p&gt;</comment>
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