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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>
    </build-info>


<item>
            <title>[CSHARP-2034] FilterDefinition decimal scaling factor</title>
                <link>https://jira.mongodb.org/browse/CSHARP-2034</link>
                <project id="10041" key="CSHARP">C# Driver</project>
                    <description>&lt;p&gt;I am having an issue when creating a FilterDefinition with a nullable decimal. The decimal scaling factor is not being honored.&lt;/p&gt;

&lt;p&gt;&amp;#8211; Example &amp;#8211;&lt;br/&gt;
class Foo&lt;br/&gt;
{&lt;br/&gt;
  public decimal? Amount &lt;/p&gt;
{ get; set; }
&lt;p&gt;}&lt;/p&gt;

&lt;p&gt;In MongoChef the Document looks like this&lt;/p&gt;
{ 
    &quot;_id&quot; : ObjectId(&quot;5994596fcb337f716c4c827c&quot;), 
    &quot;invoiceTotal&quot; : &quot;0.00&quot;
}

&lt;p&gt;I want to get all documents where Amount != null and Amount != 0.00&lt;/p&gt;

&lt;p&gt;IMongoCollection&amp;lt;Foo&amp;gt; _collection;&lt;br/&gt;
_collection.FindAsync(x =&amp;gt; x.Amount != null &amp;amp;&amp;amp; x.Amount != 0.00m)&lt;br/&gt;
Creates a FilterDefinition: &quot;{ &quot;amount&quot; : &lt;/p&gt;
{ &quot;$ne&quot; : null }
&lt;p&gt;, &quot;amount&quot; : &lt;/p&gt;
{ &quot;$ne&quot; : &quot;0&quot; }
&lt;p&gt; }&quot;&lt;/p&gt;

&lt;p&gt;Document ObjectId(&quot;5994596fcb337f716c4c827c&quot;) is returned in the result set. But its Amount is 0.00 &lt;/p&gt;

&lt;p&gt;You can see the issue in the FilterDefinition the decimal scaling factor was not honored when the FilterDefinition was created.&lt;/p&gt;</description>
                <environment></environment>
        <key id="421406">CSHARP-2034</key>
            <summary>FilterDefinition decimal scaling factor</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="espray">espray</reporter>
                        <labels>
                            <label>triaged</label>
                    </labels>
                <created>Tue, 29 Aug 2017 15:33:31 +0000</created>
                <updated>Wed, 9 Feb 2022 22:04:16 +0000</updated>
                            <resolved>Wed, 9 Feb 2022 22:04:15 +0000</resolved>
                                    <version>2.3</version>
                                                    <component>Linq</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4346524" author="james.kovacs" created="Wed, 9 Feb 2022 22:03:41 +0000"  >&lt;p&gt;Using .NET/C# driver 2.14.1:&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;var query = coll.Find(x =&amp;gt; x.Amount != null &amp;amp;&amp;amp; x.Amount != 0.00m);&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;Console.WriteLine(query);&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;produces the following output:&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;find({ &quot;$and&quot; : [{ &quot;Amount&quot; : { &quot;$ne&quot; : null } }, { &quot;Amount&quot; : { &quot;$ne&quot; : &quot;0.00&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;So appending &lt;tt&gt;.Value&lt;/tt&gt; is no longer required.&lt;/p&gt;

&lt;p&gt;As you discovered, precision (e.g. number of decimal places) matters when decimals are persisted as strings. &quot;0&quot; is different than &quot;0.0&quot; is different than &quot;0.00&quot;.&lt;/p&gt;

&lt;p&gt;Starting in MongoDB 3.4, the database can store decimals exactly using &lt;tt&gt;BsonType.Decimal&lt;/tt&gt;. For backwards compatibility, the driver&apos;s default is still to store them as strings, but you can easily change this default while bootstrapping your application using:&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;BsonSerializer.RegisterSerializer&amp;lt;decimal&amp;gt;(new DecimalSerializer(BsonType.Decimal128));&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 above query now produces:&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;find({ &quot;$and&quot; : [{ &quot;Amount&quot; : { &quot;$ne&quot; : null } }, { &quot;Amount&quot; : { &quot;$ne&quot; : NumberDecimal(&quot;0.00&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;Note that the type is now &lt;tt&gt;NumberDecimal&lt;/tt&gt;. This has the advantage that the database type is a numeric type and numeric comparisons can be performed. That means that 0 is the same as 0.0 is the same as 0.00 etc. You no longer have to take precision into account when writing your queries.&lt;/p&gt;</comment>
                            <comment id="1667922" author="espray" created="Fri, 8 Sep 2017 14:17:23 +0000"  >&lt;p&gt;Verified the workaround works&lt;/p&gt;

&lt;p&gt;Another odd thing the nullable decimal value in the document was &quot;0&quot; | &quot;0.0&quot; | &quot;0.00&quot;. I would assume this was because when I created the document the nullable decimal field may have been zero filled.&lt;/p&gt;

&lt;p&gt;My finale expression &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;_collection.FindAsync(x =&amp;gt; x.Amount != null &amp;amp;&amp;amp; (x.Amount.Value != 0m || x.Amount.Value != 0.0m || x.Amount.Value != 0.00m) )&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;Thanks!&lt;/p&gt;</comment>
                            <comment id="1666906" author="rstam" created="Thu, 7 Sep 2017 14:49:15 +0000"  >&lt;p&gt;I am able to reproduce this. It seems to be related to the fact that your Amount property is nullable.&lt;/p&gt;

&lt;p&gt;As a workaround you can add &lt;tt&gt;.Value&lt;/tt&gt; to the predicate:&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;_collection.FindAsync(x =&amp;gt; x.Amount != null &amp;amp;&amp;amp; x.Amount.Value != 0.00m)&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>
                    </comments>
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