PG_AUTHID

PG_AUTHID records information about the database authentication identifiers (roles). The concept of users is contained in that of roles. A user is actually a role whose rolcanlogin has been set. Any role, whether the rolcanlogin is set or not, can use other roles as members.

For a cluster, only one pg_authid exists which is not available for every database. It is accessible only to users with system administrator rights.

**Table 1** PG_AUTHID columns
Column	Type	Description
oid	oid	Row identifier (hidden attribute; must be explicitly selected)
rolname	name	Role name
rolsuper	boolean	Whether the role is the initial system administrator with the highest permission
rolinherit	boolean	Whether the role automatically inherits permissions of roles it is a member of
rolcreaterole	boolean	Whether the role can create more roles
rolcreatedb	boolean	Whether the role can create databases
rolcatupdate	boolean	Whether the role can directly update system catalogs. Only the initial system administrator whose usesysid is 10 has this permission. It is not available for other users.
rolcanlogin	boolean	Whether a role can log in, that is, whether a role can be given as the initial session authorization identifier.
rolreplication	boolean	Indicates that the role is a replicated one (an adaptation syntax and no actual meaning).
rolauditadmin	boolean	Indicates that the role is an audit user.
rolsystemadmin	boolean	Indicates that the role is an administrator.
rolconnlimit	integer	Limits the maximum number of concurrent connections of a user on a CN. -1 means no limit.
rolpassword	text	Password (possibly encrypted); NULL if no password.
rolvalidbegin	timestamp with time zone	Account validity start time; NULL if no start time
rolvaliduntil	timestamp with time zone	Password expiry time; NULL if no expiration
rolrespool	name	Resource pool that a user can use
roluseft	boolean	Whether the role can perform operations on foreign tables
rolparentid	oid	OID of a group user to which the user belongs
roltabspace	Text	Storage space of the user permanent table
rolkind	char	Special type of user, including private users, logical cluster administrators, and common users.
rolnodegroup	oid	OID of a node group associated with a user. The node group must be a logical cluster.
roltempspace	Text	Storage space of the user temporary table
rolspillspace	Text	Operator disk spill space of the user
rolexcpdata	text	Reserved column
rolauthinfo	text	Additional information when LDAP authentication is used. If other authentication modes are used, the value is NULL.
rolpwdexpire	integer	Password expiration time. Users can change their password before it expires. After the password expires, only the administrator can change the password. The value -1 indicates that the password never expires.
rolpwdtime	timestamp with time zone	Time when the password is created