How to enable Datacell?

Hi, I am using MonetDB 11.11.11, and I am very interested in the data cell externsion. I followed the doc (http://www.monetdb.org/Documentation/Extensions/Streams), but at the first step when I tried to set datacell optimizer, it said sql>set optimizer='datacell_pipe'; SyntaxException:parseError: ';' expected Syntax error detected.See documentation for details Does anyone know how to use datacell? Thanks very much! Best regards, Chang _______________________________________________ users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list