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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-80761] [CQF] Efficient lowering of sampling plans to SBE</title>
                <link>https://jira.mongodb.org/browse/SERVER-80761</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&#160;&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Create a custom lowering transport for sampling queries.&lt;/li&gt;
	&lt;li&gt;Add handlers for&lt;/li&gt;
	&lt;li&gt;PhysScan&lt;/li&gt;
	&lt;li&gt;Eval&lt;/li&gt;
	&lt;li&gt;Filter&lt;/li&gt;
	&lt;li&gt;Limit&lt;/li&gt;
	&lt;li&gt;NLJ&lt;/li&gt;
&lt;/ul&gt;



&lt;ul&gt;
	&lt;li&gt;No use of cascades properties: will need to make use of FieldProjectionMap of sargable node.&lt;/li&gt;
	&lt;li&gt;Use SBEExpressionLowering to lower expressions directly which hang off of Filter and Eval nodes.&lt;/li&gt;
	&lt;li&gt;Add a node that counts on top (group)&lt;/li&gt;
	&lt;li&gt;might be simpler to do during this lowering&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="2434562">SERVER-80761</key>
            <summary>[CQF] Efficient lowering of sampling plans to SBE</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="svilen.mihaylov@mongodb.com">Svilen Mihaylov</assignee>
                                    <reporter username="svilen.mihaylov@mongodb.com">Svilen Mihaylov</reporter>
                        <labels>
                            <label>M1</label>
                    </labels>
                <created>Tue, 5 Sep 2023 19:40:09 +0000</created>
                <updated>Mon, 27 Nov 2023 18:50:12 +0000</updated>
                            <resolved>Mon, 27 Nov 2023 18:50:12 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="5906771" author="svilen.mihaylov" created="Mon, 27 Nov 2023 18:49:59 +0000"  >&lt;p&gt;Closing ticket. We still need to use ref tracker and a separate transport will not make sense.&lt;/p&gt;</comment>
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