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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <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>[DOCS-8014] Comment on: &quot;manual/reference/operator/query/regex.txt&quot;</title>
                <link>https://jira.mongodb.org/browse/DOCS-8014</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;how to find a data such as other DB languange like ,type is int ,not string.&lt;/p&gt;</description>
                <environment>&lt;br/&gt;
&lt;br/&gt;
*Location*: &lt;a href=&quot;https://docs.mongodb.com/manual/reference/operator/query/regex/#op._S_regex&quot;&gt;https://docs.mongodb.com/manual/reference/operator/query/regex/#op._S_regex&lt;/a&gt;&lt;br/&gt;
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*Referrer*: &lt;a href=&quot;https://docs.mongodb.com/manual/reference/operator/query/&quot;&gt;https://docs.mongodb.com/manual/reference/operator/query/&lt;/a&gt;&lt;br/&gt;
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        <key id="290958">DOCS-8014</key>
            <summary>Comment on: &quot;manual/reference/operator/query/regex.txt&quot;</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="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="xgen-internal-docs">Docs Collector User</reporter>
                        <labels>
                            <label>collector-298ba4e7</label>
                    </labels>
                <created>Thu, 2 Jun 2016 10:05:30 +0000</created>
                <updated>Fri, 3 Nov 2017 11:09:57 +0000</updated>
                            <resolved>Tue, 14 Jun 2016 13:34:17 +0000</resolved>
                                                    <fixVersion>01112017-cleanup</fixVersion>
                                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1282300" author="ravind.kumar" created="Thu, 2 Jun 2016 13:47:56 +0000"  >&lt;p&gt;Hello,&lt;/p&gt;

&lt;p&gt;If you are using MongoDB 3.2+, then you might consider using the &lt;a href=&quot;https://docs.mongodb.com/manual/reference/operator/query/type/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;$type&lt;/a&gt; operator. &lt;/p&gt;

&lt;p&gt;&lt;tt&gt;$type&lt;/tt&gt; allows you to evaluate if a field is of a specific BSON type. You can see the supported types &lt;a href=&quot;https://docs.mongodb.com/manual/reference/operator/query/type/#available-types&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;The &lt;a href=&quot;https://docs.mongodb.com/manual/reference/operator/query/not/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;$not&lt;/a&gt; operator allows you to negate the result of &lt;tt&gt;$type&lt;/tt&gt; to achieve the result you are looking for.&lt;/p&gt;

&lt;p&gt;For example, given the following dataset:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    _id : &amp;lt;ObjectId()&amp;gt;&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    x : &amp;lt;int, string, or boolean&amp;gt;,&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;The following query would return documents where &lt;tt&gt;x&lt;/tt&gt; is &lt;b&gt;not&lt;/b&gt; a &lt;tt&gt;string&lt;/tt&gt;&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    db.collection.find( { &quot;x&quot; : { $not : { $type : &quot;string&quot; } } } )&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Similarly, the following query returns documents where &lt;tt&gt;X&lt;/tt&gt; is an &lt;tt&gt;int&lt;/tt&gt;&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    db.collection.find( { &quot;x&quot; : { $type : &quot;int&quot; } } )&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Please note that MongoDB differentiates between 32-bit integers (&lt;tt&gt;int&lt;/tt&gt;), 64 bit integers (&lt;tt&gt;long&lt;/tt&gt;), and &lt;tt&gt;double&lt;/tt&gt;  values. If you wanted to search for values of &lt;tt&gt;x&lt;/tt&gt; that could be an &lt;tt&gt;int&lt;/tt&gt;, &lt;tt&gt;long&lt;/tt&gt;, or &lt;tt&gt;double&lt;/tt&gt;, use the &lt;tt&gt;number&lt;/tt&gt; alias.&lt;/p&gt;

&lt;p&gt;Please see &lt;a href=&quot;https://docs.mongodb.com/manual/reference/operator/query/type/#querying-by-data-type&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this page&lt;/a&gt; if you would like more examples to work from.&lt;/p&gt;</comment>
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