CREATE NODE GROUP is a SQL command specific to Postgres-XL that creates node group information in catalog table pgxc_group.
CREATE NODE only runs on the local node where it is launched.
The name of the selected cluster node group.
The name of a cluster node.
A group of nodes works as an alias for node lists when defining tables on sub-clusters. Only Datanodes can be included in node groups.
Create a cluster node group made of nodes called Datanode1, Datanode2.
CREATE NODE GROUP cluster_group WITH Datanode1, Datanode2;