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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!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>53.8. pg_authid</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="catalog-pg-attribute.html" title="53.7. pg_attribute" /><link rel="next" href="catalog-pg-auth-members.html" title="53.9. pg_auth_members" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">53.8. <code class="structname">pg_authid</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="catalog-pg-attribute.html" title="53.7. pg_attribute">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="catalogs.html" title="Chapter 53. System Catalogs">Up</a></td><th width="60%" align="center">Chapter 53. System Catalogs</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="catalog-pg-auth-members.html" title="53.9. pg_auth_members">Next</a></td></tr></table><hr /></div><div class="sect1" id="CATALOG-PG-AUTHID"><div class="titlepage"><div><div><h2 class="title" style="clear: both">53.8. <code class="structname">pg_authid</code></h2></div></div></div><a id="id-1.10.4.10.2" class="indexterm"></a><p>
+ The catalog <code class="structname">pg_authid</code> contains information about
+ database authorization identifiers (roles). A role subsumes the concepts
+ of <span class="quote">“<span class="quote">users</span>”</span> and <span class="quote">“<span class="quote">groups</span>”</span>. A user is essentially just a
+ role with the <code class="structfield">rolcanlogin</code> flag set. Any role (with or
+ without <code class="structfield">rolcanlogin</code>) can have other roles as members; see
+ <a class="link" href="catalog-pg-auth-members.html" title="53.9. pg_auth_members"><code class="structname">pg_auth_members</code></a>.
+ </p><p>
+ Since this catalog contains passwords, it must not be publicly readable.
+ <a class="link" href="view-pg-roles.html" title="54.20. pg_roles"><code class="structname">pg_roles</code></a>
+ is a publicly readable view on
+ <code class="structname">pg_authid</code> that blanks out the password field.
+ </p><p>
+ <a class="xref" href="user-manag.html" title="Chapter 22. Database Roles">Chapter 22</a> contains detailed information about user and
+ privilege management.
+ </p><p>
+ Because user identities are cluster-wide,
+ <code class="structname">pg_authid</code>
+ is shared across all databases of a cluster: there is only one
+ copy of <code class="structname">pg_authid</code> per cluster, not
+ one per database.
+ </p><div class="table" id="id-1.10.4.10.7"><p class="title"><strong>Table 53.8. <code class="structname">pg_authid</code> Columns</strong></p><div class="table-contents"><table class="table" summary="pg_authid Columns" border="1"><colgroup><col /></colgroup><thead><tr><th class="catalog_table_entry"><p class="column_definition">
+ Column Type
+ </p>
+ <p>
+ Description
+ </p></th></tr></thead><tbody><tr><td class="catalog_table_entry"><p class="column_definition">
+ <code class="structfield">oid</code> <code class="type">oid</code>
+ </p>
+ <p>
+ Row identifier
+ </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+ <code class="structfield">rolname</code> <code class="type">name</code>
+ </p>
+ <p>
+ Role name
+ </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+ <code class="structfield">rolsuper</code> <code class="type">bool</code>
+ </p>
+ <p>
+ Role has superuser privileges
+ </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+ <code class="structfield">rolinherit</code> <code class="type">bool</code>
+ </p>
+ <p>
+ Role automatically inherits privileges of roles it is a
+ member of
+ </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+ <code class="structfield">rolcreaterole</code> <code class="type">bool</code>
+ </p>
+ <p>
+ Role can create more roles
+ </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+ <code class="structfield">rolcreatedb</code> <code class="type">bool</code>
+ </p>
+ <p>
+ Role can create databases
+ </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+ <code class="structfield">rolcanlogin</code> <code class="type">bool</code>
+ </p>
+ <p>
+ Role can log in. That is, this role can be given as the initial
+ session authorization identifier.
+ </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+ <code class="structfield">rolreplication</code> <code class="type">bool</code>
+ </p>
+ <p>
+ Role is a replication role. A replication role can initiate replication
+ connections and create and drop replication slots.
+ </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+ <code class="structfield">rolbypassrls</code> <code class="type">bool</code>
+ </p>
+ <p>
+ Role bypasses every row-level security policy, see
+ <a class="xref" href="ddl-rowsecurity.html" title="5.8. Row Security Policies">Section 5.8</a> for more information.
+ </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+ <code class="structfield">rolconnlimit</code> <code class="type">int4</code>
+ </p>
+ <p>
+ For roles that can log in, this sets maximum number of concurrent
+ connections this role can make. -1 means no limit.
+ </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+ <code class="structfield">rolpassword</code> <code class="type">text</code>
+ </p>
+ <p>
+ Password (possibly encrypted); null if none. The format depends
+ on the form of encryption used.
+ </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+ <code class="structfield">rolvaliduntil</code> <code class="type">timestamptz</code>
+ </p>
+ <p>
+ Password expiry time (only used for password authentication);
+ null if no expiration
+ </p></td></tr></tbody></table></div></div><br class="table-break" /><p>
+ For an MD5 encrypted password, <code class="structfield">rolpassword</code>
+ column will begin with the string <code class="literal">md5</code> followed by a
+ 32-character hexadecimal MD5 hash. The MD5 hash will be of the user's
+ password concatenated to their user name. For example, if user
+ <code class="literal">joe</code> has password <code class="literal">xyzzy</code>, <span class="productname">PostgreSQL</span>
+ will store the md5 hash of <code class="literal">xyzzyjoe</code>.
+ </p><p>
+ If the password is encrypted with SCRAM-SHA-256, it has the format:
+</p><pre class="synopsis">
+SCRAM-SHA-256$<em class="replaceable"><code>&lt;iteration count&gt;</code></em>:<em class="replaceable"><code>&lt;salt&gt;</code></em>$<em class="replaceable"><code>&lt;StoredKey&gt;</code></em>:<em class="replaceable"><code>&lt;ServerKey&gt;</code></em>
+</pre><p>
+ where <em class="replaceable"><code>salt</code></em>, <em class="replaceable"><code>StoredKey</code></em> and
+ <em class="replaceable"><code>ServerKey</code></em> are in Base64 encoded format. This format is
+ the same as that specified by <a class="ulink" href="https://tools.ietf.org/html/rfc5803" target="_top">RFC 5803</a>.
+ </p><p>
+ A password that does not follow either of those formats is assumed to be
+ unencrypted.
+ </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="catalog-pg-attribute.html" title="53.7. pg_attribute">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="catalogs.html" title="Chapter 53. System Catalogs">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="catalog-pg-auth-members.html" title="53.9. pg_auth_members">Next</a></td></tr><tr><td width="40%" align="left" valign="top">53.7. <code class="structname">pg_attribute</code> </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.4 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 53.9. <code class="structname">pg_auth_members</code></td></tr></table></div></body></html> \ No newline at end of file