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| <section id="extension-dialog">
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| <span id="id1"></span><h1><span class="target" id="index-0"></span>Extension Dialog<a class="headerlink" href="#extension-dialog" title="Link to this heading">¶</a></h1>
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| <p>Use the <em>Extension</em> dialog to install a new extension into the current database.
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| An extension is a collection of SQL objects that add targeted functionality to
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| your Postgres installation. The <em>Extension</em> dialog adds the functionality of
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| an extension to the current database only; you must register the extension in
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| each database that use the extension. Before you load an extension into a
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| database, you should confirm that any pre-requisite files are installed.</p>
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| <p>The <em>Extension</em> dialog allows you to implement options of the CREATE EXTENSION
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| command through the following dialog tabs: <em>General</em> and <em>Definition</em>. The <em>SQL</em>
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| tab displays the SQL code generated by dialog selections.</p>
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| <img alt="Extension dialog general tab" class="align-center" src="_images/extension_general.png" />
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| <p>Use the fields in the <em>General</em> tab to identify an extension:</p>
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| <ul class="simple">
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| <li><p>Use the drop-down listbox in the <em>Name</em> field to select the extension. Each
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| extension must have a unique name.</p></li>
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| <li><p>Move the switch next to <em>Cascade?</em> towards right position to automatically
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| install any extensions that this extension depends on that are not already
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| installed.</p></li>
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| <li><p>Store notes about the extension in the <em>Comment</em> field.</p></li>
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| </ul>
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| <p>Click the <em>Definition</em> tab to continue.</p>
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| <img alt="Extension dialog definition tab" class="align-center" src="_images/extension_definition.png" />
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| <p>Use the <em>Definition</em> tab to select the <em>Schema</em> and <em>Version</em>:</p>
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| <ul class="simple">
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| <li><p>Use the drop-down listbox next to <em>Schema</em> to select the name of the schema
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| in which to install the extension’s objects.</p></li>
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| <li><p>Use the drop-down listbox next to <em>Version</em> to select the version of the
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| extension to install.</p></li>
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| </ul>
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| <p>Click the <em>SQL</em> tab to continue.</p>
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| <p>Your entries in the <em>Extension</em> dialog generate a SQL command (see an example
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| below). Use the <em>SQL</em> tab for review; revisit or switch tabs to make any changes
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| to the SQL command.</p>
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| <section id="example">
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| <h2>Example<a class="headerlink" href="#example" title="Link to this heading">¶</a></h2>
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| <p>The following is an example of the sql command generated by user selections in
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| the <em>Extension</em> dialog:</p>
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| <img alt="Extension dialog sql tab" class="align-center" src="_images/extension_sql.png" />
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| <p>The command creates the <em>adminpack</em> extension in the <em>public</em> schema. It is
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| version <em>2.0</em> of <em>adminpack</em>.</p>
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| <ul class="simple">
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| <li><p>Click the <em>Info</em> button (i) to access online help.</p></li>
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| <li><p>Click the <em>Save</em> button to save work.</p></li>
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| <li><p>Click the <em>Close</em> button to exit without saving work.</p></li>
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| <li><p>Click the <em>Reset</em> button to restore configuration parameters.</p></li>
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| </ul>
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| <h3><a href="index.html">Table of Contents</a></h3>
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| <li><a class="reference internal" href="#">Extension Dialog</a><ul>
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| <li><a class="reference internal" href="#example">Example</a></li>
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| <li class="toctree-l1"><a class="reference internal" href="getting_started.html">Getting Started</a></li>
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