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v1.1

Documentation:v1.1

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PG_AUTHID

PG_AUTHID records information about 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 its rolcanlogin is set or not, can use other roles as members.

For MogDB, only one PG_AUTHID exists, which is not available for every database. This system catalog is accessible only to system administrators.

Table 1 PG_AUTHID columns

Name Type Description
oid oid Row identifier (hidden attribute, which must be specified)
rolname name Specifies the name of a role.
rolsuper Boolean Whether the role is the initial system administrator with the highest permission
rolinherit Boolean Whether the role automatically inherits permissions of roles of which it is a member
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 unavailable for other users.
rolcanlogin Boolean Whether the role can log in (whether this 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 Username of the administrator
rolconnlimit integer Maximum number of concurrent connections that this role can make (valid for roles that can log in)
The value -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 Maximum size of a user data table
rolkind char Special user types, including private users and common users
rolnodegroup oid Unsupported currently
roltempspace text Storage space of the user temporary table
rolspillspace text Maximum size of data that can be written to disks when a user executes a job
rolexcpdata text Query rules that can be set by users (reserved)
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