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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>[SERVER-62111] Inconsistent results between SBE and Classical engines for queries with $dateAdd on invalid inputs </title>
                <link>https://jira.mongodb.org/browse/SERVER-62111</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="1952537">SERVER-62111</key>
            <summary>Inconsistent results between SBE and Classical engines for queries with $dateAdd on invalid inputs </summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="13202">Works as Designed</resolution>
                                        <assignee username="irina.yatsenko@mongodb.com">Irina Yatsenko</assignee>
                                    <reporter username="irina.yatsenko@mongodb.com">Irina Yatsenko</reporter>
                        <labels>
                    </labels>
                <created>Thu, 16 Dec 2021 20:13:29 +0000</created>
                <updated>Fri, 27 Oct 2023 13:52:09 +0000</updated>
                            <resolved>Fri, 17 Dec 2021 18:30:10 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4257344" author="JIRAUSER1259274" created="Fri, 17 Dec 2021 18:29:41 +0000"  >&lt;p&gt;That is, the difference in behavior in this ticket is by design. Relaxing the fuzzers to take this into account has been fixed per TIG-3637.&lt;/p&gt;</comment>
                            <comment id="4256969" author="JIRAUSER1259274" created="Fri, 17 Dec 2021 16:31:31 +0000"  >&lt;p&gt;It has been decided in prior similar precedents that the following should be SBE&apos;s canonical behavior:&lt;br/&gt;
1. only the &quot;logical&quot; style operators $and, $or, $switch and $ifNull will perform short-circuit evaluation&lt;br/&gt;
2. other operators don&apos;t do short-circuiting and maintain strict left-to-right evaluation&lt;br/&gt;
3. if certain inputs are null &lt;b&gt;and all inputs are valid&lt;/b&gt;, output null&lt;/p&gt;

&lt;p&gt;This means that occasionally it&apos;s possible for a query to succeed in one engine and fail in another and this shouldn&apos;t be considered a bug.&lt;/p&gt;</comment>
                            <comment id="4254822" author="JIRAUSER1259274" created="Thu, 16 Dec 2021 20:17:56 +0000"  >&lt;p&gt;Note, if the projection clause is modified to {x: {$dateAdd: {startDate: new Date(), unit: &quot;second&quot;, amount: {$indexOfCP: &lt;span class=&quot;error&quot;&gt;&amp;#91;&amp;quot;foo&amp;quot;, &amp;quot;$str&amp;quot;, 0&amp;#93;&lt;/span&gt;},}}}, the classic engine starts returning &quot;errmsg&quot; : &quot;Executor error during find command :: caused by :: $indexOfCP requires a string as the second argument, found: missing&quot;, so I suspect, when the field for startDate is missing, the classic engine doesn&apos;t evaluate the `amount` but SBE still does...&lt;/p&gt;

&lt;p&gt;Confirmed: in ExpressionDateArithmetics::evaluate() the startDate is evaluated first, and if missing it returns immediately w/o evaluating the rest of the args.&lt;/p&gt;</comment>
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&lt;p&gt;query:&lt;br/&gt;
find(&lt;br/&gt;
{},&lt;br/&gt;
{x: {$dateAdd: {startDate: &quot;$date&quot;,unit: &quot;second&quot;,amount: {$indexOfCP: &lt;span class=&quot;error&quot;&gt;&amp;#91;&amp;quot;foo&amp;quot;, &amp;quot;$str&amp;quot;, 0&amp;#93;&lt;/span&gt;},}}}&lt;br/&gt;
)&lt;/p&gt;

&lt;p&gt;Results:&lt;br/&gt;
classic:  &lt;/p&gt;
{ &quot;_id&quot; : 0, &quot;x&quot; : null }
&lt;p&gt;sbe: &quot;code&quot; : 5075301, &quot;errmsg&quot; : &quot;Executor error during find command :: caused by :: $indexOfCP substring must resolve to a string&quot;&lt;/p&gt;</customfieldvalue>

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