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<title>42.23.pg_namespace</title>
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="catalog-pg-namespace"></a>42.23.<code class="structname">pg_namespace</code></h2></div></div></div>
<a name="id826747"></a><p> The catalog <code class="structname">pg_namespace</code> stores namespaces.
A namespace is the structure underlying SQL schemas: each namespace
can have a separate collection of relations, types, etc. without name
conflicts.
</p>
<div class="table">
<a name="id826768"></a><p class="title"><b>Table42.23.<code class="structname">pg_namespace</code> Columns</b></p>
<div class="table-contents"><table summary="pg_namespace Columns" border="1">
<colgroup>
<col>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>Name</th>
<th>Type</th>
<th>References</th>
<th>Description</th>
</tr></thead>
<tbody>
<tr>
<td><code class="structfield">nspname</code></td>
<td><code class="type">name</code></td>
<td></td>
<td>Name of the namespace</td>
</tr>
<tr>
<td><code class="structfield">nspowner</code></td>
<td><code class="type">oid</code></td>
<td><code class="literal"><a href="catalog-pg-authid.html" title="42.8.pg_authid"><code class="structname">pg_authid</code></a>.oid</code></td>
<td>Owner of the namespace</td>
</tr>
<tr>
<td><code class="structfield">nspacl</code></td>
<td><code class="type">aclitem[]</code></td>
<td></td>
<td> Access privileges; see
<a href="sql-grant.html">GRANT</a> and
<a href="sql-revoke.html">REVOKE</a>
for details.
</td>
</tr>
</tbody>
</table></div>
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