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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="sect1" lang="en">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="infoschema-sql-languages"></a>31.30.<code class="literal">sql_languages</code></h2></div></div></div>
<p> The table <code class="literal">sql_languages</code> contains one row for
each SQL language binding that is supported by
<span class="productname">PostgreSQL</span>.
<span class="productname">PostgreSQL</span> supports direct SQL and
embedded SQL in C; that is all you will learn from this table.
</p>
<div class="table">
<a name="id700882"></a><p class="title"><b>Table31.28.<code class="literal">sql_languages</code> Columns</b></p>
<div class="table-contents"><table summary="sql_languages Columns" border="1">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>Name</th>
<th>Data Type</th>
<th>Description</th>
</tr></thead>
<tbody>
<tr>
<td><code class="literal">sql_language_source</code></td>
<td><code class="type">character_data</code></td>
<td> The name of the source of the language definition; always
<code class="literal">ISO 9075</code>, that is, the SQL standard
</td>
</tr>
<tr>
<td><code class="literal">sql_language_year</code></td>
<td><code class="type">character_data</code></td>
<td> The year the standard referenced in
<code class="literal">sql_language_source</code> was approved; currently
<code class="literal">2003</code>
</td>
</tr>
<tr>
<td><code class="literal">sql_language_conformance</code></td>
<td><code class="type">character_data</code></td>
<td> The standard conformance level for the language binding. For
ISO 9075:2003 this is always <code class="literal">CORE</code>.
</td>
</tr>
<tr>
<td><code class="literal">sql_language_integrity</code></td>
<td><code class="type">character_data</code></td>
<td>Always null (This value is relevant to an earlier version of the SQL standard.)</td>
</tr>
<tr>
<td><code class="literal">sql_language_implementation</code></td>
<td><code class="type">character_data</code></td>
<td>Always null</td>
</tr>
<tr>
<td><code class="literal">sql_language_binding_style</code></td>
<td><code class="type">character_data</code></td>
<td> The language binding style, either <code class="literal">DIRECT</code> or
<code class="literal">EMBEDDED</code>
</td>
</tr>
<tr>
<td><code class="literal">sql_language_programming_language</code></td>
<td><code class="type">character_data</code></td>
<td> The programming language, if the binding style is
<code class="literal">EMBEDDED</code>, else null. <span class="productname">PostgreSQL</span> only
supports the language C.
</td>
</tr>
</tbody>
</table></div>
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