Index for Section SESSION

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SET
NAME
  SET SESSION AUTHORIZATION - set the session user identifier and the current
  user identifier of the current session

SYNOPSIS
  SET SESSION AUTHORIZATION 'username'

DESCRIPTION
  This command sets the session user identifier and the current user
  identifier of the current SQL-session context to be username.

  The session user identifier is initially set to be the (possibly
  authenticated) user name provided by the client. The current user
  identifier is normally equal to the session user identifier, but may change
  temporarily in the context of ``setuid'' functions and similar mechanisms.
  The current user identifier is relevant for permission checking.

  Execution of this command is only permitted if the initial session user
  (the authenticated user) had the superuser privilege. This permission is
  kept for the duration of a connection; for example, it is possible to
  temporarily become an unprivileged user and later switch back to become a
  superuser.

EXAMPLES
  SELECT SESSION_USER, CURRENT_USER;
   current_user | session_user
  --------------+--------------
   peter	| peter

  SET SESSION AUTHORIZATION 'paul';

  SELECT SESSION_USER, CURRENT_USER;
   current_user | session_user
  --------------+--------------
   paul		| paul

COMPATIBILITY
  SQL99

  SQL99 allows some other expressions to appear in place of the literal
  username which are not important in practice. PostgreSQL allows identifier
  syntax ("username"), which SQL does not. SQL does not allow this command
  during a transaction; PostgreSQL does not make this restriction because
  there is no reason to. The privileges necessary to execute this command are
  left implementation-defined by the standard.

Index for Section SESSION

Alphabetical listing for S

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