IV. SQL type commands
	This part contains reference information for various SQL type
	Pgpool-II commands.  These commands
	can be issued inside the SQL session using the
	standard PostgreSQL client
	like psql. They are not forwarded to the
	backend DB: instead they are processed
	by Pgpool-II server.  Please note
	that SQL type commands cannot be used in extended query
	mode. You will get parse errors
	from PostgreSQL.
      
- Table of Contents
 - PGPOOL SHOW -- show the value of a configuration parameter
 - PGPOOL SET -- change a configuration parameter
 - PGPOOL RESET -- restore the value of a configuration parameter to the default value
 - SHOW POOL STATUS --       sends back the list of configuration parameters with their name,
      value, and description
    
 - SHOW POOL NODES --       sends back a list of all configured nodes
    
 - SHOW POOL_PROCESSES --       sends back a list of all Pgpool-II
      processes waiting for connections and dealing with a connection
    
 - SHOW POOL_POOLS --       sends back a list of pools handled
      by Pgpool-II.
    
 - SHOW POOL_VERSION --       displays a string containing
      the Pgpool-II release number.
    
 - SHOW POOL_CACHE --       displays cache storage statistics