Welcome to mclient, the MonetDB/SQL interactive terminal (Oct2014) Database: MonetDB v11.19.3 (Oct2014), 'mapi:monetdb://server:50000/anonym' Type \q to quit, \? for a list of available commands auto commit mode: on sql>select * from sys.queue; SELECT: no such operator 'queue' sql>select * from sys.queue(); SELECT: no such operator 'queue' sql>