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<h1 id="connector-sqlserver--page-root">SQL Server Connector<a class="headerlink" href="#connector-sqlserver--page-root" title="Permalink to this headline">#</a></h1>
<p>The SQL Server connector allows querying and creating tables in an
external <a class="reference external" href="https://www.microsoft.com/sql-server/">Microsoft SQL Server</a> database. This can be used to join data between
different systems like SQL Server and Hive, or between two different
SQL Server instances.</p>
<h2 id="configuration">Configuration<a class="headerlink" href="#configuration" title="Permalink to this headline">#</a></h2>
<p>To configure the SQL Server connector, create a catalog properties file
in <code class="docutils literal notranslate"><span class="pre">etc/catalog</span></code> named, for example, <code class="docutils literal notranslate"><span class="pre">sqlserver.properties</span></code>, to
mount the SQL Server connector as the <code class="docutils literal notranslate"><span class="pre">sqlserver</span></code> catalog.
Create the file with the following contents, replacing the
connection properties as appropriate for your setup:</p>
<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>connector.name=sqlserver
connection-url=jdbc:sqlserver://[serverName[\instanceName][:portNumber]]
connection-user=root
connection-password=secret
</pre></div>
</div>
<h3 id="multiple-sql-server-databases-or-servers">Multiple SQL Server Databases or Servers<a class="headerlink" href="#multiple-sql-server-databases-or-servers" title="Permalink to this headline">#</a></h3>
<p>The SQL Server connector can only access a single database within
a SQL Server server. Thus, if you have multiple SQL Server databases,
or want to connect to multiple instances of the SQL Server, you must configure
multiple catalogs, one for each instance.</p>
<p>To add another catalog, simply add another properties file to <code class="docutils literal notranslate"><span class="pre">etc/catalog</span></code>
with a different name, making sure it ends in <code class="docutils literal notranslate"><span class="pre">.properties</span></code>. For example,
if you name the property file <code class="docutils literal notranslate"><span class="pre">sales.properties</span></code>, Presto creates a
catalog named <code class="docutils literal notranslate"><span class="pre">sales</span></code> using the configured connector.</p>
<h2 id="querying-sql-server">Querying SQL Server<a class="headerlink" href="#querying-sql-server" title="Permalink to this headline">#</a></h2>
<p>The SQL Server connector provides access to all schemas visible to the specified user in the configured database.
For the following examples, assume the SQL Server catalog is <code class="docutils literal notranslate"><span class="pre">sqlserver</span></code>.</p>
<p>You can see the available schemas by running <code class="docutils literal notranslate"><span class="pre">SHOW</span> <span class="pre">SCHEMAS</span></code>:</p>
<div class="highlight-sql notranslate"><div class="highlight"><pre><span></span><span class="k">SHOW</span> <span class="n">SCHEMAS</span> <span class="k">FROM</span> <span class="n">sqlserver</span><span class="p">;</span>
</pre></div>
</div>
<p>If you have a schema named <code class="docutils literal notranslate"><span class="pre">web</span></code>, you can view the tables
in this schema by running <code class="docutils literal notranslate"><span class="pre">SHOW</span> <span class="pre">TABLES</span></code>:</p>
<div class="highlight-sql notranslate"><div class="highlight"><pre><span></span><span class="k">SHOW</span> <span class="n">TABLES</span> <span class="k">FROM</span> <span class="n">sqlserver</span><span class="p">.</span><span class="n">web</span><span class="p">;</span>
</pre></div>
</div>
<p>You can see a list of the columns in the <code class="docutils literal notranslate"><span class="pre">clicks</span></code> table in the <code class="docutils literal notranslate"><span class="pre">web</span></code> database
using either of the following:</p>
<div class="highlight-sql notranslate"><div class="highlight"><pre><span></span><span class="k">DESCRIBE</span> <span class="n">sqlserver</span><span class="p">.</span><span class="n">web</span><span class="p">.</span><span class="n">clicks</span><span class="p">;</span>
<span class="k">SHOW</span> <span class="n">COLUMNS</span> <span class="k">FROM</span> <span class="n">sqlserver</span><span class="p">.</span><span class="n">web</span><span class="p">.</span><span class="n">clicks</span><span class="p">;</span>
</pre></div>
</div>
<p>Finally, you can query the <code class="docutils literal notranslate"><span class="pre">clicks</span></code> table in the <code class="docutils literal notranslate"><span class="pre">web</span></code> schema:</p>
<div class="highlight-sql notranslate"><div class="highlight"><pre><span></span><span class="k">SELECT</span> <span class="o">*</span> <span class="k">FROM</span> <span class="n">sqlserver</span><span class="p">.</span><span class="n">web</span><span class="p">.</span><span class="n">clicks</span><span class="p">;</span>
</pre></div>
</div>
<p>If you used a different name for your catalog properties file, use
that catalog name instead of <code class="docutils literal notranslate"><span class="pre">sqlserver</span></code> in the above examples.</p>
<h2 id="sql-server-connector-limitations">SQL Server Connector Limitations<a class="headerlink" href="#sql-server-connector-limitations" title="Permalink to this headline">#</a></h2>
<p>Presto supports connecting to SQL Server 2016, SQL Server 2014, SQL Server 2012
and Azure SQL Database.</p>
<p>Presto supports the following SQL Server data types.
The following table shows the mappings between SQL Server and Presto data types.</p>
<table>
<colgroup>
<col style="width: 51%"/>
<col style="width: 49%"/>
</colgroup>
<thead>
<tr class="row-odd"><th class="head"><p>SQL Server Type</p></th>
<th class="head"><p>Presto Type</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">bigint</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">bigint</span></code></p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">smallint</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">smallint</span></code></p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">int</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">integer</span></code></p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">float</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">double</span></code></p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">char(n)</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">char(n)</span></code></p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">varchar(n)</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">varchar(n)</span></code></p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">date</span></code></p></td>
<td><p><code class="docutils literal notranslate"><span class="pre">date</span></code></p></td>
</tr>
</tbody>
</table>
<p>Complete list of <a class="reference external" href="https://msdn.microsoft.com/en-us/library/ms187752.aspx">SQL Server data types</a>.</p>
<p>The following SQL statements are not yet supported:</p>
<ul class="simple">
<li><p><a class="reference internal" href="../sql/delete.html"><span class="doc">DELETE</span></a></p></li>
<li><p><a class="reference internal" href="../sql/grant.html"><span class="doc">GRANT</span></a></p></li>
<li><p><a class="reference internal" href="../sql/revoke.html"><span class="doc">REVOKE</span></a></p></li>
</ul>
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