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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>37.45. sql_languages</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="infoschema-sql-implementation-info.html" title="37.44. sql_implementation_info" /><link rel="next" href="infoschema-sql-packages.html" title="37.46. sql_packages" /></head><body><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">37.45. <code xmlns="http://www.w3.org/1999/xhtml" class="literal">sql_languages</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="infoschema-sql-implementation-info.html" title="37.44. sql_implementation_info">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="information-schema.html" title="Chapter 37. The Information Schema">Up</a></td><th width="60%" align="center">Chapter 37. The Information Schema</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 11.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="infoschema-sql-packages.html" title="37.46. sql_packages">Next</a></td></tr></table><hr></hr></div><div class="sect1" id="INFOSCHEMA-SQL-LANGUAGES"><div class="titlepage"><div><div><h2 class="title" style="clear: both">37.45. <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><p>
This table was removed from the SQL standard in SQL:2008, so there
are no entries referring to standards later than SQL:2003.
</p><div class="table" id="id-1.7.6.49.4"><p class="title"><strong>Table 37.43. <code class="literal">sql_languages</code> Columns</strong></p><div class="table-contents"><table class="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.
</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.
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