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3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/docs/category/features"><span itemprop="name">Features</span></a><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/docs/managed-datahub/observe/assertions"><span itemprop="name">Assertions (Data Quality)</span></a><meta itemprop="position" content="2"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Schema Assertions</span><meta itemprop="position" content="3"></li></ul></nav><span class="theme-doc-version-badge badge badge--secondary">Version: Next</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><h1>Schema Assertions</h1><div class="availabilityCard_P5od card"><strong>Feature Availability</strong><div><span class="platform_wqXv">Self-Hosted DataHub <span role="img" aria-label="close-circle" class="anticon anticon-close-circle"><svg fill-rule="evenodd" viewBox="64 64 896 896" focusable="false" data-icon="close-circle" width="1em" height="1em" fill="currentColor" aria-hidden="true"><path d="M512 64c247.4 0 448 200.6 448 448S759.4 960 512 960 64 759.4 64 512 264.6 64 512 64zm127.98 274.82h-.04l-.08.06L512 466.75 384.14 338.88c-.04-.05-.06-.06-.08-.06a.12.12 0 00-.07 0c-.03 0-.05.01-.09.05l-45.02 45.02a.2.2 0 00-.05.09.12.12 0 000 .07v.02a.27.27 0 00.06.06L466.75 512 338.88 639.86c-.05.04-.06.06-.06.08a.12.12 0 000 .07c0 .03.01.05.05.09l45.02 45.02a.2.2 0 00.09.05.12.12 0 00.07 0c.02 0 .04-.01.08-.05L512 557.25l127.86 127.87c.04.04.06.05.08.05a.12.12 0 00.07 0c.03 0 .05-.01.09-.05l45.02-45.02a.2.2 0 00.05-.09.12.12 0 000-.07v-.02a.27.27 0 00-.05-.06L557.25 512l127.87-127.86c.04-.04.05-.06.05-.08a.12.12 0 000-.07c0-.03-.01-.05-.05-.09l-45.02-45.02a.2.2 0 00-.09-.05.12.12 0 00-.07 0z"></path></svg></span></span></div><div><span role="img" aria-label="cloud" class="anticon anticon-cloud managedIcon_AxXO"><svg viewBox="64 64 896 896" focusable="false" data-icon="cloud" width="1em" height="1em" fill="currentColor" aria-hidden="true"><path d="M811.4 418.7C765.6 297.9 648.9 212 512.2 212S258.8 297.8 213 418.6C127.3 441.1 64 519.1 64 612c0 110.5 89.5 200 199.9 200h496.2C870.5 812 960 722.5 960 612c0-92.7-63.1-170.7-148.6-193.3zm36.3 281a123.07 123.07 0 01-87.6 36.3H263.9c-33.1 0-64.2-12.9-87.6-36.3A123.3 123.3 0 01140 612c0-28 9.1-54.3 26.2-76.3a125.7 125.7 0 0166.1-43.7l37.9-9.9 13.9-36.6c8.6-22.8 20.6-44.1 35.7-63.4a245.6 245.6 0 0152.4-49.9c41.1-28.9 89.5-44.2 140-44.2s98.9 15.3 140 44.2c19.9 14 37.5 30.8 52.4 49.9 15.1 19.3 27.1 40.7 35.7 63.4l13.8 36.5 37.8 10c54.3 14.5 92.1 63.8 92.1 120 0 33.1-12.9 64.3-36.3 87.7z"></path></svg></span><span class="platform_wqXv platformAvailable_Y8lN">DataHub Cloud <span role="img" aria-label="check-circle" class="anticon anticon-check-circle"><svg viewBox="64 64 896 896" focusable="false" data-icon="check-circle" width="1em" height="1em" fill="currentColor" aria-hidden="true"><path d="M512 64C264.6 64 64 264.6 64 512s200.6 448 448 448 448-200.6 448-448S759.4 64 512 64zm193.5 301.7l-210.6 292a31.8 31.8 0 01-51.7 0L318.5 484.9c-3.8-5.3 0-12.7 6.5-12.7h46.9c10.2 0 19.9 4.9 25.9 13.3l71.2 98.8 157.2-218c6-8.3 15.6-13.3 25.9-13.3H699c6.5 0 10.3 7.4 6.5 12.7z"></path></svg></span></span></div></div><blockquote><p>The <strong>Schema Assertions</strong> feature is available as part of the <strong>DataHub Cloud Observe</strong> module of DataHub Cloud.
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If you are interested in learning more about <strong>DataHub Cloud Observe</strong> or trying it out, please <a href="https://datahub.com/products/data-observability/" target="_blank" rel="noopener noreferrer">visit our website</a>.</p></blockquote><h2 class="anchor anchorWithStickyNavbar_LWe7" id="introduction">Introduction<a href="#introduction" class="hash-link" aria-label="Direct link to Introduction" title="Direct link to Introduction"></a></h2><p>Can you remember a time when columns were unexpectedly added, removed, or altered for a key Table in your Data Warehouse?
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Perhaps this caused downstream tables, views, dashboards, data pipelines, or AI models to break.</p><p>There are many reasons why the structure of an important Table on Snowflake, Redshift, or BigQuery may schema change, breaking the expectations
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of downstream consumers of the table.</p><p>What if you could reduce the time to detect these incidents, so that the people responsible for the data were made aware of data
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issues <em>before</em> anyone else? With DataHub Cloud <strong>Schema Assertions</strong>, you can.</p><p>DataHub Cloud allows users to define expectations about a table's columns and their data types, and will monitor and validate these expectations over
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time, notifying you when a breaking change occurs.</p><p>In this article, we'll cover the basics of monitoring Schema Assertions - what they are, how to configure them, and more - so that you and your team can
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start building trust in your most important data assets.</p><p>Let's get started!</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a href="#support" class="hash-link" aria-label="Direct link to Support" title="Direct link to Support"></a></h2><p>Schema Assertions are currently supported for all data sources that provide a schema via the normal ingestion process.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-is-a-schema-assertion">What is a Schema Assertion?<a href="#what-is-a-schema-assertion" class="hash-link" aria-label="Direct link to What is a Schema Assertion?" title="Direct link to What is a Schema Assertion?"></a></h2><p>A <strong>Schema Assertion</strong> is a Data Quality rule used to monitor the columns in a particular table and their data types.
|
||
They allow you to define a set of "required" columns for the table along with their expected types, and then be notified
|
||
if anything changes via a failing assertion.</p><p>This type of assertion can be particularly useful if you want to monitor the structure of a table which is outside of your
|
||
direct control, for example the result of an ETL process from an upstream application or tables provided by a 3rd party data vendor. It
|
||
allows you to get ahead of potentially breaking schema changes, by alerting you as soon as they occur, and before
|
||
they have a chance to negatively impact downstream assets.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="anatomy-of-a-schema-assertion">Anatomy of a Schema Assertion<a href="#anatomy-of-a-schema-assertion" class="hash-link" aria-label="Direct link to Anatomy of a Schema Assertion" title="Direct link to Anatomy of a Schema Assertion"></a></h3><p>At the most basic level, <strong>Schema Assertions</strong> consist of a few important parts:</p><ol><li>A <strong>Condition Type</strong></li><li>A set of <strong>Expected Columns</strong></li></ol><p>In this section, we'll give an overview of each.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="1-condition-type">1. Condition Type<a href="#1-condition-type" class="hash-link" aria-label="Direct link to 1. Condition Type" title="Direct link to 1. Condition Type"></a></h4><p>The <strong>Condition Type</strong> defines the conditions under which the Assertion will <strong>fail</strong>. More concretely, it determines
|
||
how the <em>expected</em> columns should be compared to the <em>actual</em> columns found in the schema to determine a passing or failing
|
||
state for the data quality check.</p><p>The list of supported condition types:</p><ul><li><strong>Contains</strong>: The assertion will fail if the actual schema does not contain all expected columns and their types.</li><li><strong>Exact Match</strong>: The assertion will fail if the actual schema does not EXACTLY match the expected columns and their types. No
|
||
additional columns will be permitted.</li></ul><p>Schema Assertions will be evaluated whenever a change in the schema of the underlying table is detected.
|
||
They also have an off switch: they can be started or stopped at any time by pressing the start (play) or stop (pause) buttons.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="2-expected-columns">2. Expected Columns<a href="#2-expected-columns" class="hash-link" aria-label="Direct link to 2. Expected Columns" title="Direct link to 2. Expected Columns"></a></h4><p>The <strong>Expected Columns</strong> are a set of column <strong>names</strong> along with their high-level <strong>data
|
||
types</strong> that should be used to compare against the <em>actual</em> columns found in the table. By default, the expected column
|
||
set will be derived from the current set of columns found in the table. This conveniently allows you to "freeze" or "lock"
|
||
the current schema of a table in just a few clicks.</p><p>Each "expected column" is composed of a</p><ol><li><p><strong>Name</strong>: The name of the column that should be present in the table. Nested columns are supported in a flattened
|
||
fashion by simply providing a dot-separated path to the nested column. For example, <code>user.id</code> would be a nested column <code>id</code>.
|
||
In the case of a complex array or map, each field in the elements of the array or map will be treated as dot-delimited columns.
|
||
Note that verifying the specific type of object in primitive arrays or maps is not currently supported. Note that the comparison performed
|
||
is currently not case-sensitive.</p></li><li><p><strong>Type</strong>: The high-level data type of the column in the table. This type intentionally "high level" to allow for normal column widening practices
|
||
without the risk of failing the assertion unnecessarily. For example a <code>varchar(64)</code> and a <code>varchar(256)</code> will both resolve to the same high-level
|
||
"STRING" type. The currently supported set of data types include the following:</p><ul><li>String</li><li>Number</li><li>Boolean</li><li>Date</li><li>Timestamp</li><li>Struct</li><li>Array</li><li>Map</li><li>Union</li><li>Bytes</li><li>Enum</li></ul></li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="creating-a-schema-assertion">Creating a Schema Assertion<a href="#creating-a-schema-assertion" class="hash-link" aria-label="Direct link to Creating a Schema Assertion" title="Direct link to Creating a Schema Assertion"></a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites"></a></h3><ul><li><strong>Permissions</strong>: To create or delete Schema Assertions for a specific entity on DataHub, you'll need to be granted the
|
||
<code>Edit Assertions</code>, <code>Edit Monitors</code> privileges for the entity. This will be granted to Entity owners as part of the <code>Asset Owners - Metadata Policy</code>
|
||
by default.</li></ul><p>Once these are in place, you're ready to create your Schema Assertions!</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="steps">Steps<a href="#steps" class="hash-link" aria-label="Direct link to Steps" title="Direct link to Steps"></a></h3><ol><li>Navigate to the Table you want to monitor</li><li>Click the <strong>Quality</strong> tab</li></ol><p align="left"><img loading="lazy" width="80%" src="https://raw.githubusercontent.com/datahub-project/static-assets/main/imgs/observe/freshness/profile-validation-tab.png" class="img_ev3q"></p><ol start="3"><li>Click <strong>+ Create Assertion</strong></li></ol><p align="left"><img loading="lazy" width="45%" src="https://raw.githubusercontent.com/datahub-project/static-assets/main/imgs/observe/schema/assertion-builder-choose-type.png" class="img_ev3q"></p><ol start="4"><li><p>Choose <strong>Schema</strong></p></li><li><p>Select the <strong>condition type</strong>.</p></li><li><p>Define the <strong>expected columns</strong> that will be continually compared against the actual column set. This defaults to the current columns for the table.</p></li></ol><p align="left"><img loading="lazy" width="40%" src="https://raw.githubusercontent.com/datahub-project/static-assets/main/imgs/observe/schema/assertion-builder-config.png" class="img_ev3q"></p><ol start="7"><li>Configure actions that should be taken when the assertion passes or fails</li></ol><p align="left"><img loading="lazy" width="40%" src="https://raw.githubusercontent.com/datahub-project/static-assets/main/imgs/observe/shared/assertion-builder-actions.png" class="img_ev3q"></p><ul><li><p><strong>Raise incident</strong>: Automatically raise a new DataHub Incident for the Table whenever the Custom SQL Assertion is failing. This
|
||
may indicate that the Table is unfit for consumption. Configure Slack Notifications under <strong>Settings</strong> to be notified when
|
||
an incident is created due to an Assertion failure.</p></li><li><p><strong>Resolve incident</strong>: Automatically resolved any incidents that were raised due to failures in this Custom SQL Assertion. Note that
|
||
any other incidents will not be impacted.</p></li></ul><p>Then click <strong>Next</strong>.</p><ol start="7"><li>(Optional) Add a <strong>description</strong> for the assertion. This is a human-readable description of the assertion. If you do not provide one, a description will be generated for you.</li></ol><p align="left"><img loading="lazy" width="40%" src="https://raw.githubusercontent.com/datahub-project/static-assets/main/imgs/observe/shared/assertion-builder-description.png" class="img_ev3q"></p><ol start="8"><li>Click <strong>Save</strong>.</li></ol><p>And that's it! DataHub will now begin to monitor your Schema Assertion for the table.</p><p>Once your assertion has run, you will begin to see Success or Failure status:</p><p align="left"><img loading="lazy" width="45%" src="https://raw.githubusercontent.com/datahub-project/static-assets/main/imgs/observe/schema/assertion-results.png" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="stopping-a-schema-assertion">Stopping a Schema Assertion<a href="#stopping-a-schema-assertion" class="hash-link" aria-label="Direct link to Stopping a Schema Assertion" title="Direct link to Stopping a Schema Assertion"></a></h2><p>In order to temporarily stop the evaluation of the assertion:</p><ol><li>Navigate to the <strong>Quality</strong> tab of the Table with the assertion</li><li>Click <strong>Schema</strong> to open the Schema Assertion</li><li>Click the "Stop" button.</li></ol><p align="left"><img loading="lazy" width="25%" src="https://raw.githubusercontent.com/datahub-project/static-assets/main/imgs/observe/shared/stop-assertion.png" class="img_ev3q"></p><p>To resume the assertion, simply click <strong>Start</strong>.</p><p align="left"><img loading="lazy" width="25%" src="https://raw.githubusercontent.com/datahub-project/static-assets/main/imgs/observe/shared/start-assertion.png" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="creating-schema-assertions-via-api">Creating Schema Assertions via API<a href="#creating-schema-assertions-via-api" class="hash-link" aria-label="Direct link to Creating Schema Assertions via API" title="Direct link to Creating Schema Assertions via API"></a></h2><p>Note that to create or delete Assertions and Monitors for a specific entity on DataHub, you'll need the
|
||
<code>Edit Assertions</code> and <code>Edit Monitors</code> privileges to create schema assertion via API.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="graphql">GraphQL<a href="#graphql" class="hash-link" aria-label="Direct link to GraphQL" title="Direct link to GraphQL"></a></h4><p>In order to create a Schema Assertions, you can use the <code>upsertDatasetSchemaAssertionMonitor</code> mutation.</p><h5 class="anchor anchorWithStickyNavbar_LWe7" id="examples">Examples<a href="#examples" class="hash-link" aria-label="Direct link to Examples" title="Direct link to Examples"></a></h5><p>To create a Schema Assertion that checks for a the presence of a specific set of columns:</p><div class="language-graphql codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-graphql codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">mutation</span><span class="token plain"> </span><span class="token definition-mutation function" style="color:rgb(130, 170, 255)">upsertDatasetSchemaAssertionMonitor</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token property-query">upsertDatasetSchemaAssertionMonitor</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">input</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">entityUrn</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token description string" style="color:rgb(195, 232, 141)">"</span><span class="token description string language-markdown tag punctuation" style="color:rgb(199, 146, 234)"><</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)">urn</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">of</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">the</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">table</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">to</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">be</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">monitored</span><span class="token description string language-markdown tag punctuation" style="color:rgb(199, 146, 234)">></span><span class="token description string" style="color:rgb(195, 232, 141)">"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">assertion</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">compatibility</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token constant" style="color:rgb(130, 170, 255)">SUPERSET</span><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># How the actual columns will be compared against the expected fields (provided next)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">fields</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">path</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"id"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">type</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token constant" style="color:rgb(130, 170, 255)">STRING</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">path</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"count"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">type</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token constant" style="color:rgb(130, 170, 255)">NUMBER</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">path</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"struct"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">type</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token constant" style="color:rgb(130, 170, 255)">STRUCT</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">path</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">"struct.nestedBooleanField"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">type</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token constant" style="color:rgb(130, 170, 255)">BOOLEAN</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">]</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">description</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token description string" style="color:rgb(195, 232, 141)">"</span><span class="token description string language-markdown tag punctuation" style="color:rgb(199, 146, 234)"><</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)">description</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">of</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">the</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">schema</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">assertion</span><span class="token description string language-markdown tag punctuation" style="color:rgb(199, 146, 234)">></span><span class="token description string" style="color:rgb(195, 232, 141)">"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">mode</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token constant" style="color:rgb(130, 170, 255)">ACTIVE</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The supported compatibility types are <code>EXACT_MATCH</code> and <code>SUPERSET</code> (Contains).</p><p>You can use same endpoint with assertion urn input to update an existing Schema Assertion, simply add the <code>assertionUrn</code> field:</p><div class="language-graphql codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-graphql codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">mutation</span><span class="token plain"> </span><span class="token definition-mutation function" style="color:rgb(130, 170, 255)">upsertDatasetSchemaAssertionMonitor</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token property-query">upsertDatasetSchemaAssertionMonitor</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">assertionUrn</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token description string" style="color:rgb(195, 232, 141)">"</span><span class="token description string language-markdown" style="color:rgb(195, 232, 141)">urn:li:assertion:existing-assertion-id</span><span class="token description string" style="color:rgb(195, 232, 141)">"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">input</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">entityUrn</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token description string" style="color:rgb(195, 232, 141)">"</span><span class="token description string language-markdown tag punctuation" style="color:rgb(199, 146, 234)"><</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)">urn</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">of</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">the</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">table</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">to</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 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style="color:#bfc7d5"><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">description</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token description string" style="color:rgb(195, 232, 141)">"</span><span class="token description string language-markdown tag punctuation" style="color:rgb(199, 146, 234)"><</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)">description</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">of</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">the</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">schema</span><span class="token description string language-markdown tag" style="color:rgb(255, 85, 114)"> </span><span class="token description string language-markdown tag attr-name" style="color:rgb(255, 203, 107)">assertion</span><span class="token description string language-markdown tag punctuation" style="color:rgb(199, 146, 234)">></span><span class="token description string" style="color:rgb(195, 232, 141)">"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token attr-name" style="color:rgb(255, 203, 107)">mode</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="token constant" style="color:rgb(130, 170, 255)">ACTIVE</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>You can delete assertions along with their monitors using GraphQL mutations: <code>deleteAssertion</code> and <code>deleteMonitor</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tips">Tips<a href="#tips" class="hash-link" aria-label="Direct link to Tips" title="Direct link to Tips"></a></h3><div class="theme-admonition theme-admonition-info alert alert--info admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 14 16"><path fill-rule="evenodd" d="M7 2.3c3.14 0 5.7 2.56 5.7 5.7s-2.56 5.7-5.7 5.7A5.71 5.71 0 0 1 1.3 8c0-3.14 2.56-5.7 5.7-5.7zM7 1C3.14 1 0 4.14 0 8s3.14 7 7 7 7-3.14 7-7-3.14-7-7-7zm1 3H6v5h2V4zm0 6H6v2h2v-2z"></path></svg></span>info</div><div class="admonitionContent_S0QG"><p><strong>Authorization</strong></p><p>Remember to always provide a DataHub Personal Access Token when calling the GraphQL API. To do so, just add the 'Authorization' header as follows:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">Authorization: Bearer <personal-access-token></span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p><strong>Exploring GraphQL API</strong></p><p>Also, remember that you can play with an interactive version of the DataHub Cloud GraphQL API at <code>https://your-account-id.acryl.io/api/graphiql</code></p></div></div></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="slackUtm_uoBr"><div class="slackUtm_uoBr"><hr>Need more help? 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