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href="/docs/data_node/extract_node/postgresql-cdc">latest version</a></b> (<!-- -->1.11.0<!-- -->).</div></div><div class="docItemContainer_Djhp"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_YNFT"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 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 class="breadcrumbs__item"><span class="breadcrumbs__link">Data Nodes</span><meta itemprop="position" content="1"></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Extract Nodes</span><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">PostgreSQL-CDC</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"><header><h1>PostgreSQL-CDC</h1></header><h2 class="anchor anchorWithStickyNavbar_LWe7" id="overview">Overview<a href="#overview" class="hash-link" aria-label="Direct link to Overview" title="Direct link to Overview"></a></h2><p>The <code>PostgreSQL Extract Node</code> allows for reading snapshot data and incremental data from PostgreSQL database. This document describes how to set up the <code>PostgreSQL Extract Node</code> to run SQL queries against PostgreSQL databases.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="supported-version">Supported Version<a href="#supported-version" class="hash-link" aria-label="Direct link to Supported Version" title="Direct link to Supported Version"></a></h2><table><thead><tr><th>Extract Node</th><th>Version</th><th>Driver</th></tr></thead><tbody><tr><td><a href="/docs/next/data_node/extract_node/postgresql-cdc">PostgreSQL-CDC</a></td><td><a href="https://www.postgresql.org" target="_blank" rel="noopener noreferrer">PostgreSQL</a>: 9.6, 10, 11, 12</td><td>JDBC Driver: 42.2.12</td></tr></tbody></table><h2 class="anchor anchorWithStickyNavbar_LWe7" id="dependencies">Dependencies<a href="#dependencies" class="hash-link" aria-label="Direct link to Dependencies" title="Direct link to Dependencies"></a></h2><p>In order to set up the <code>PostgreSQL Extract Node</code>, the following provides dependency information for both projects using a
build automation tool (such as Maven or SBT) and SQL Client with Sort Connectors JAR bundles.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="maven-dependency">Maven dependency<a href="#maven-dependency" class="hash-link" aria-label="Direct link to Maven dependency" title="Direct link to Maven dependency"></a></h3><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><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:#F8F8F2"><span class="token plain">&lt;dependency&gt;</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &lt;groupId&gt;org.apache.inlong&lt;/groupId&gt;</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &lt;artifactId&gt;sort-connector-postgres-cdc&lt;/artifactId&gt;</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> &lt;version&gt;1.12.0-SNAPSHOT&lt;/version&gt;</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">&lt;/dependency&gt;</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 class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path 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 class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-postgresql-server">Setup PostgreSQL server<a href="#setup-postgresql-server" class="hash-link" aria-label="Direct link to Setup PostgreSQL server" title="Direct link to Setup PostgreSQL server"></a></h2><p>Change Data Capture (CDC) allows you to track and propagate changes in a PostgreSQL database to downstream consumers based on its Write-Ahead Log (WAL).
You need to ensure that the upstream database is configured to support logical replication. Before using the PostgreSQL connector to monitor the changes committed on a PostgreSQL server,
decide which logical decoding plug-in you intend to use. If you plan not to use the native <code>pgoutput</code> logical replication stream support, then you must install the logical decoding
plug-in into the PostgreSQL server.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="pgoutput">pgoutput<a href="#pgoutput" class="hash-link" aria-label="Direct link to pgoutput" title="Direct link to pgoutput"></a></h3><p>pgoutput is the standard logical decoding output plug-in in PostgreSQL 10+. It is maintained by the PostgreSQL community, and used by PostgreSQL itself for logical replication.
This plug-in is always present so no additional libraries need to be installed.</p><ol><li>Check the <code>wal_level</code> configuration setting:</li></ol><div class="language-sql codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-sql codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">SHOW</span><span class="token plain"> wal_level</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</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 class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path 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 class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path 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 default value is replica. For CDC, you’ll need to set it to <code>logical</code> in the database configuration file (postgresql.conf). Keep in mind that changing the wal_level requires a restart of the Postgres instance and can affect database performance.</p><ol start="2"><li>To configure the replication slot regardless of the decoder being used, specify the following in the postgresql.conf file:</li></ol><div class="language-properties codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-properties codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">wal_level = logical </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 class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path 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 class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="decoderbufs">decoderbufs<a href="#decoderbufs" class="hash-link" aria-label="Direct link to decoderbufs" title="Direct link to decoderbufs"></a></h3><p>decoderbufs is based on Protobuf and maintained by the Debezium community. <a href="https://github.com/debezium/postgres-decoderbufs" target="_blank" rel="noopener noreferrer">installing</a> it.</p><ol><li>To load the plug-in at startup, add the following to the postgresql.conf file:</li></ol><div class="language-properties codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-properties codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">shared_preload_libraries = &#x27;decoderbufs&#x27;</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 class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path 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 class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><ol start="2"><li>To configure the replication slot regardless of the decoder being used, specify the following in the postgresql.conf file:</li></ol><div class="language-properties codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-properties codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">wal_level = logical </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 class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path 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 class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="replica-identity">replica identity<a href="#replica-identity" class="hash-link" aria-label="Direct link to replica identity" title="Direct link to replica identity"></a></h3><p><code>REPLICA IDENTITY</code> is a PostgreSQL-specific table-level setting that determines the amount of information that is available to the logical decoding plug-in for UPDATE and DELETE events. See <a href="https://debezium.io/documentation/reference/stable/connectors/postgresql.html#postgresql-replica-identity" target="_blank" rel="noopener noreferrer">more</a>.</p><p>Please keep the <code>replica indentity</code> level of source tables to <code>FULL</code>. You can check and change this value by SQL:</p><div class="language-sql codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-sql codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token comment" style="color:rgb(98, 114, 164)">-- show replica identity</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">SELECT</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">CASE</span><span class="token plain"> relreplident</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">WHEN</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;d&#x27;</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">THEN</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;default&#x27;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">WHEN</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;n&#x27;</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">THEN</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;nothing&#x27;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">WHEN</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;f&#x27;</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">THEN</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;full&#x27;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">WHEN</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;i&#x27;</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">THEN</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;index&#x27;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">END</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">AS</span><span class="token plain"> replica_identity</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">FROM</span><span class="token plain"> pg_class</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">WHERE</span><span class="token plain"> oid </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;mytablename&#x27;</span><span class="token plain">::regclass</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token comment" style="color:rgb(98, 114, 164)">-- change replica identity</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">ALTER</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">TABLE</span><span class="token plain"> mytablename REPLICA </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">IDENTITY</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">FULL</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</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 class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path 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 class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="how-to-create-a-postgresql-extract-node">How to create a PostgreSQL Extract Node<a href="#how-to-create-a-postgresql-extract-node" class="hash-link" aria-label="Direct link to How to create a PostgreSQL Extract Node" title="Direct link to How to create a PostgreSQL Extract Node"></a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="usage-for-sql-api">Usage for SQL API<a href="#usage-for-sql-api" class="hash-link" aria-label="Direct link to Usage for SQL API" title="Direct link to Usage for SQL API"></a></h3><div class="language-sql codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-sql codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">CREATE</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">TABLE</span><span class="token plain"> </span><span class="token identifier punctuation" style="color:rgb(248, 248, 242)">`</span><span class="token identifier">postgresTable</span><span class="token identifier punctuation" style="color:rgb(248, 248, 242)">`</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token identifier punctuation" style="color:rgb(248, 248, 242)">`</span><span class="token identifier">name</span><span class="token identifier punctuation" style="color:rgb(248, 248, 242)">`</span><span class="token plain"> STRING</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token identifier punctuation" style="color:rgb(248, 248, 242)">`</span><span class="token identifier">age</span><span class="token identifier punctuation" style="color:rgb(248, 248, 242)">`</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">INT</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">WITH</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;connector&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;postgres-cdc-inlong&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;hostname&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;localhost&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;username&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;postgres&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;password&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;inlong&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;database-name&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;postgres&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;schema-name&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;public&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;port&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;5432&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;table-name&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;user&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;decoding.plugin.name&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;pgoutput&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;slot.name&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;feaafacbaddadc&#x27;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</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 class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path 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 class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="usage-for-inlong-dashboard">Usage for InLong Dashboard<a href="#usage-for-inlong-dashboard" class="hash-link" aria-label="Direct link to Usage for InLong Dashboard" title="Direct link to Usage for InLong Dashboard"></a></h3><p>TODO: It will be supported in the future.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="usage-for-inlong-manager-client">Usage for InLong Manager Client<a href="#usage-for-inlong-manager-client" class="hash-link" aria-label="Direct link to Usage for InLong Manager Client" title="Direct link to Usage for InLong Manager Client"></a></h3><p>TODO: It will be supported in the future.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="postgresql-extract-node-options">PostgreSQL Extract Node Options<a href="#postgresql-extract-node-options" class="hash-link" aria-label="Direct link to PostgreSQL Extract Node Options" title="Direct link to PostgreSQL Extract Node Options"></a></h2><table><thead><tr><th>Option</th><th>Required</th><th>Default</th><th>Type</th><th>Description</th></tr></thead><tbody><tr><td>connector</td><td>required</td><td>(none)</td><td>String</td><td>Specify what connector to use, here should be <code>postgres-cdc-inlong</code>.</td></tr><tr><td>hostname</td><td>required</td><td>(none)</td><td>String</td><td>IP address or hostname of the PostgreSQL database server.</td></tr><tr><td>username</td><td>required</td><td>(none)</td><td>String</td><td>Name of the PostgreSQL database to use when connecting to the PostgreSQL database server.</td></tr><tr><td>password</td><td>required</td><td>(none)</td><td>String</td><td>Password to use when connecting to the PostgreSQL database server.</td></tr><tr><td>database-name</td><td>required</td><td>(none)</td><td>String</td><td>Database name of the PostgreSQL server to monitor.</td></tr><tr><td>schema-name</td><td>required</td><td>(none)</td><td>String</td><td>Schema name of the PostgreSQL database to monitor.</td></tr><tr><td>table-name</td><td>required</td><td>(none)</td><td>String</td><td>Table name of the PostgreSQL database to monitor.</td></tr><tr><td>port</td><td>optional</td><td>5432</td><td>Integer</td><td>Integer port number of the PostgreSQL database server.</td></tr><tr><td>decoding.plugin.name</td><td>optional</td><td>decoderbufs</td><td>String</td><td>The name of the Postgres logical decoding plug-in installed on the server. Supported values are decoderbufs, wal2json, wal2json_rds, wal2json_streaming, wal2json_rds_streaming and pgoutput.</td></tr><tr><td>slot.name</td><td>optional</td><td>flink</td><td>String</td><td>The name of the PostgreSQL logical decoding slot that was created for streaming changes from a particular plug-in for a particular database/schema. The server uses this slot to stream events to the connector that you are configuring. Slot names must conform to PostgreSQL replication slot naming rules, which state: &quot;Each replication slot has a name, which can contain lower-case letters, numbers, and the underscore character.&quot;</td></tr><tr><td>debezium.*</td><td>optional</td><td>(none)</td><td>String</td><td>Pass-through Debezium&#x27;s properties to Debezium Embedded Engine which is used to capture data changes from Postgres server. For example: &#x27;debezium.snapshot.mode&#x27; = &#x27;never&#x27;. See more about the <a href="https://debezium.io/documentation/reference/1.5/connectors/postgresql.html#postgresql-connector-properties" target="_blank" rel="noopener noreferrer">Debezium&#x27;s Postgres Connector properties</a>.</td></tr><tr><td>inlong.metric.labels</td><td>optional</td><td>(none)</td><td>String</td><td>Inlong metric label, format of value is groupId=<code>{groupId}</code>&amp;streamId=<code>{streamId}</code>&amp;nodeId=<code>{nodeId}</code>.</td></tr></tbody></table><div class="theme-admonition theme-admonition-caution alert alert--warning admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 16 16"><path fill-rule="evenodd" d="M8.893 1.5c-.183-.31-.52-.5-.887-.5s-.703.19-.886.5L.138 13.499a.98.98 0 0 0 0 1.001c.193.31.53.501.886.501h13.964c.367 0 .704-.19.877-.5a1.03 1.03 0 0 0 .01-1.002L8.893 1.5zm.133 11.497H6.987v-2.003h2.039v2.003zm0-3.004H6.987V5.987h2.039v4.006z"></path></svg></span>caution</div><div class="admonitionContent_S0QG"><ul><li><code>slot.name</code> is recommended to set for different tables to avoid the potential PSQLException: ERROR: replication slot &quot;flink&quot; is active for PID 974 error. </li><li>PSQLException: ERROR: all replication slots are in use Hint: Free one or increase max_replication_slots. We can delete slot by the following statement.</li></ul></div></div><div class="language-sql codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-sql codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">SELECT</span><span class="token plain"> </span><span class="token operator">*</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">FROM</span><span class="token plain"> pg_replication_slots</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token comment" style="color:rgb(98, 114, 164)">-- get slot name is flink. delete it</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">SELECT</span><span class="token plain"> pg_drop_replication_slot</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;flink&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</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 class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path 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 class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="available-metadata">Available Metadata<a href="#available-metadata" class="hash-link" aria-label="Direct link to Available Metadata" title="Direct link to Available Metadata"></a></h2><p>The following format metadata can be exposed as read-only (VIRTUAL) columns in a table definition.</p><table><thead><tr><th>key</th><th>Data Type</th><th>Description</th></tr></thead><tbody><tr><td>table_name</td><td>STRING NOT NULL</td><td>Name of the table that contain the row.</td></tr><tr><td>schema_name</td><td>STRING NOT NULL</td><td>Name of the schema that contain the row.</td></tr><tr><td>database_name</td><td>STRING NOT NULL</td><td>Name of the database that contain the row.</td></tr><tr><td>op_ts</td><td>TIMESTAMP_LTZ(3) NOT NULL</td><td>It indicates the time that the change was made in the database. If the record is read from snapshot of the table instead of the change stream, the value is always 0.</td></tr></tbody></table><p>The extended CREATE TABLE example demonstrates the syntax for exposing these metadata fields:</p><div class="language-sql codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-sql codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">CREATE</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">TABLE</span><span class="token plain"> postgresTable </span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> db_name STRING METADATA </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">FROM</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;database_name&#x27;</span><span class="token plain"> VIRTUAL</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> table_name STRING METADATA </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">FROM</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;table_name&#x27;</span><span class="token plain"> VIRTUAL</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> operation_ts TIMESTAMP_LTZ</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token number">3</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token plain"> METADATA </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">FROM</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;op_ts&#x27;</span><span class="token plain"> VIRTUAL</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token identifier punctuation" style="color:rgb(248, 248, 242)">`</span><span class="token identifier">name</span><span class="token identifier punctuation" style="color:rgb(248, 248, 242)">`</span><span class="token plain"> STRING</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token identifier punctuation" style="color:rgb(248, 248, 242)">`</span><span class="token identifier">age</span><span class="token identifier punctuation" style="color:rgb(248, 248, 242)">`</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">INT</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">WITH</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;connector&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;postgres-cdc-inlong&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;hostname&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;localhost&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;username&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;postgres&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;password&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;inlong&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;database-name&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;postgres&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;schema-name&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;public&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;port&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;5432&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;table-name&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;user&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;decoding.plugin.name&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;pgoutput&#x27;</span><span class="token punctuation" style="color:rgb(248, 248, 242)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;slot.name&#x27;</span><span class="token plain"> </span><span class="token operator">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">&#x27;feaafacbaddadc&#x27;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</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 class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path 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 class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="data-type-mapping">Data Type Mapping<a href="#data-type-mapping" class="hash-link" aria-label="Direct link to Data Type Mapping" title="Direct link to Data Type Mapping"></a></h2><table><thead><tr><th>PostgreSQL type</th><th>Flink SQL type</th></tr></thead><tbody><tr><td></td><td>TINYINT</td></tr><tr><td>SMALLINT <br> INT2 <br> SMALLSERIAL <br> SERIAL2</td><td>SMALLINT</td></tr><tr><td>INTEGER <br> SERIAL</td><td>INT</td></tr><tr><td>BIGINT <br> BIGSERIAL</td><td>BIGINT</td></tr><tr><td></td><td>DECIMAL(20, 0)</td></tr><tr><td>REAL <br> FLOAT4</td><td>FLOAT</td></tr><tr><td>FLOAT8 <br> DOUBLE PRECISION</td><td>DOUBLE</td></tr><tr><td>NUMERIC(p, s) <br> DECIMAL(p, s)</td><td>DECIMAL(p, s)</td></tr><tr><td>BOOLEAN</td><td>BOOLEAN</td></tr><tr><td>DATE</td><td>DATE</td></tr><tr><td>TIME <!-- -->[(p)][WITHOUT TIMEZONE]</td><td>TIME <!-- -->[(p)][WITHOUT TIMEZONE]</td></tr><tr><td>TIMESTAMP <!-- -->[(p)]<!-- -->WITHOUT TIMEZONE</td><td>TIMESTAMP <!-- -->[(p)][WITHOUT TIMEZONE]</td></tr><tr><td>CHAR(n) <br> CHARACTER(n) <br> VARCHAR(n) <br> CHARACTER VARYING(n) <br> TEXT</td><td>STRING</td></tr><tr><td>BYTEA</td><td>BYTES</td></tr></tbody></table></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://github.com/apache/inlong-website/edit/master/docs/data_node/extract_node/postgresql-cdc.md" target="_blank" rel="noreferrer noopener" 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