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    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[CSHARP-4688] Calling queryable.First when queryable is of type IMongoQueryable&lt;T&gt; doesn&apos;t add { $limit : 1 } stage to pipeline</title>
                <link>https://jira.mongodb.org/browse/CSHARP-4688</link>
                <project id="10041" key="CSHARP">C# Driver</project>
                    <description>&lt;p&gt;When `queryable` is of type `IMongoQueryable&amp;lt;T&amp;gt;` the compiler resolves the call to `queryable.First()` to the overload found in `IAsyncCursorSourceExtensions` instead of to `Queryable.First`.&lt;/p&gt;

&lt;p&gt;Compiler rules for resolving overloads are rather hard to understand and in this case it resolves to an unexpected overload.&lt;/p&gt;

&lt;p&gt;The effect of this is that the query sent to the server does not have the desired `&lt;/p&gt;
{ $limit : 1 }
&lt;p&gt;` stage.&lt;/p&gt;

&lt;p&gt;A similar situation exists for many other extension methods in `IAsyncCursorSourceExtensions` that have the same name as extension methods in `Queryable` or `MongoQueryable`.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2376144">CSHARP-4688</key>
            <summary>Calling queryable.First when queryable is of type IMongoQueryable&lt;T&gt; doesn&apos;t add { $limit : 1 } stage to pipeline</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="10300" iconUrl="https://jira.mongodb.org/images/icons/priorities/medium.svg">Unknown</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="9">Done</resolution>
                                        <assignee username="robert@mongodb.com">Robert Stam</assignee>
                                    <reporter username="robert@mongodb.com">Robert Stam</reporter>
                        <labels>
                    </labels>
                <created>Fri, 23 Jun 2023 20:06:50 +0000</created>
                <updated>Thu, 29 Jun 2023 16:27:17 +0000</updated>
                            <resolved>Thu, 29 Jun 2023 16:27:17 +0000</resolved>
                                                    <fixVersion>2.21.0</fixVersion>
                                    <component>LINQ3</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="5534359" author="xgen-internal-githook" created="Thu, 29 Jun 2023 16:26:45 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;rstam&apos;, &apos;email&apos;: &apos;robert@robertstam.org&apos;, &apos;username&apos;: &apos;rstam&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CSHARP-4688&quot; title=&quot;Calling queryable.First when queryable is of type IMongoQueryable&amp;lt;T&amp;gt; doesn&amp;#39;t add { $limit : 1 } stage to pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CSHARP-4688&quot;&gt;&lt;del&gt;CSHARP-4688&lt;/del&gt;&lt;/a&gt;: Calling queryable.First when queryable is of type IMongoQueryable&amp;lt;T&amp;gt; doesn&apos;t add &lt;/p&gt;
{ $limit : 1 }
&lt;p&gt; stage to pipeline.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-csharp-driver/commit/6c20aa7b918978ee4d40d41a137c472f5a4edef7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-csharp-driver/commit/6c20aa7b918978ee4d40d41a137c472f5a4edef7&lt;/a&gt;&lt;/p&gt;</comment>
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2.  Would you like the user to see examples of the syntax and/or executable code and its output?&lt;br/&gt;
3.  Which versions of the driver/connector does this apply to?&lt;/p&gt;</customfieldvalue>

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