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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>[SERVER-10227] Add regex support to FTS command/queries</title>
                <link>https://jira.mongodb.org/browse/SERVER-10227</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;It would be very useful for querying FTS indexes to support regular expressions in the &quot;search&quot; field/parameter.&lt;/p&gt;

&lt;p&gt;If you are indexing and querying non-standard/language text content, there are use cases where you would want to know about substrings.&lt;/p&gt;

&lt;p&gt;Using the example content below, it would be nice to be able to say:&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;firstTest18 AND -someText AND /.*Wrong22$/&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;&lt;b&gt;Example Content&lt;/b&gt;&lt;br/&gt;
firstTest18 worked well, but there was an exception of type: SomethingThatVariesWrong22&lt;/p&gt;</description>
                <environment></environment>
        <key id="82501">SERVER-10227</key>
            <summary>Add regex support to FTS command/queries</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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-integration">Backlog - Query Integration</assignee>
                                    <reporter username="rn@deftlabs.com">Ryan Nitz</reporter>
                        <labels>
                            <label>qi-text-search</label>
                    </labels>
                <created>Tue, 16 Jul 2013 21:39:41 +0000</created>
                <updated>Thu, 28 Dec 2023 18:29:40 +0000</updated>
                                                                            <component>Text Search</component>
                                        <votes>3</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="688691" author="rassi@10gen.com" created="Tue, 12 Aug 2014 22:02:22 +0000"  >&lt;p&gt;Linking dup &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-14865&quot; title=&quot;Support for Regex in Text Search second pass&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-14865&quot;&gt;&lt;del&gt;SERVER-14865&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The solution Eliot proposes above is clunky in that it requires the user writing the query to know what fields are being indexed.  My personal refinement of this feature request would be to support some mechanism to allow users to specify an additional predicate that would be applied to all text-index fields (which would filter for documents that have at least one text-indexed field that passes the predicate).&lt;/p&gt;

&lt;p&gt;To illustrate: suppose a user has defined an index {a: &quot;text&quot;, b: &quot;text&quot;, c: &quot;text&quot;}.  In today&apos;s query language, to perform the operation that Ryan poses as &quot;firstTest18 AND -someText AND /.*Wrong22$/&quot;, the user constructs the following query:&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({$text: {$search: &lt;/span&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;&quot;firstTest18 -someText&quot;&lt;/span&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;}, $or: [{a: /.*Wrong22$/}, {b: /.*Wrong22$/}, {c: /.*Wrong22$/}]})&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;Perhaps a $text sub-operator (perhaps called something like $match) could be introduced such that the following is equivalent to the above:&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;db.collection.find({$text: {$search: &lt;/span&gt;&lt;span style=&quot;color: blue; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;&quot;firstTest18 -someText&quot;&lt;/span&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;, $match: /.*Wrong22$/}})&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</comment>
                            <comment id="382673" author="eliot" created="Wed, 17 Jul 2013 01:24:10 +0000"  >&lt;p&gt;What does using a filter in the command not work?&lt;br/&gt;
You should be able to do that now?&lt;/p&gt;

&lt;p&gt;db.foo.runCommand( &quot;text&quot; , { search : &quot;firstTest18 -someText&quot;, filter : &lt;/p&gt;
{ something : /.*Wrong22$/ }
&lt;p&gt; } )&lt;/p&gt;</comment>
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                            <issuelinktype id="10010">
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                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="152107">SERVER-14865</issuekey>
        </issuelink>
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                                    </issuelinktype>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="84488">SERVER-10413</issuekey>
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