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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-24485] Indicate Decimal128 is just the 128 version in extended JSON</title>
                <link>https://jira.mongodb.org/browse/SERVER-24485</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;While implementing HHVM-186 (Decimal128 support in the HHVM driver), &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=bjori&quot; class=&quot;user-hover&quot; rel=&quot;bjori&quot;&gt;bjori&lt;/a&gt; pointed out that I should name the class Decimal128 instead of Decimal.&lt;/p&gt;

&lt;p&gt;When doing so, I noticed that the extended JSON representation, as well as the shell, do not include the specific type (128) either:&lt;/p&gt;

&lt;p/&gt;
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&lt;p/&gt;

&lt;p&gt;Is there a reason why the &quot;128&quot; isn&apos;t included in either extendedJSON or shell wrapper object?&lt;/p&gt;</description>
                <environment></environment>
        <key id="292624">SERVER-24485</key>
            <summary>Indicate Decimal128 is just the 128 version in extended JSON</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="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="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="derick">Derick Rethans</reporter>
                        <labels>
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                <created>Thu, 9 Jun 2016 10:36:34 +0000</created>
                <updated>Tue, 6 Dec 2022 04:24:15 +0000</updated>
                            <resolved>Wed, 15 Jun 2016 19:23:28 +0000</resolved>
                                                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>10</watches>
                                                                                                                <comments>
                            <comment id="1289747" author="geert.bosch" created="Thu, 9 Jun 2016 20:01:32 +0000"  >&lt;p&gt;From a server POV, it is extremely unlikely that we will ever add support for additional lower precision types. For a database that has to handle mixed datatypes, adding additional numeric types add significant complexity to comparison and indexing as adding a new numerical type doubles the number of type combinations. This is also the reason we never have added single precision binary floating point. &lt;/p&gt;

&lt;p&gt;Note that there wouldn&apos;t be any significant space savings regardless: our keystring encoding in indexes already uses an 8 byte format for decimals with up to significant digits, and with our default compression storage size only increases by about 3 bytes for random decimal numbers, see &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-1393&quot; title=&quot;Support decimal numbers&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-1393&quot;&gt;&lt;del&gt;SERVER-1393&lt;/del&gt;&lt;/a&gt;. Similarly, conversions and calculations can be (and to an extend have been) optimized for decimal numbers with few digits without requiring a new type.&lt;/p&gt;

&lt;p&gt;Finally, having named our decimal type NumberDecimal does not by itself preclude adding a type with different precision. None of our existing numeric types include bit sizes in their name, so we wouldn&apos;t be completely consistent in naming regardless. &lt;/p&gt;</comment>
                            <comment id="1289285" author="asya" created="Thu, 9 Jun 2016 14:50:03 +0000"  >&lt;p&gt;Let&apos;s get to consensus and be consistent by 3.3.9 release. &lt;/p&gt;</comment>
                            <comment id="1289150" author="jeff.yemin" created="Thu, 9 Jun 2016 12:51:43 +0000"  >&lt;p&gt;Including 128 in the name now would make it easier to add 32/64 bit decimal support in a future release.&lt;/p&gt;</comment>
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