NAME

       CREATE_NODE_GROUP - create a group of cluster nodes

SYNOPSIS

       CREATE NODE GROUP groupname
       WITH ( nodename [, ... ] )

DESCRIPTION

           Note
           The following description applies only to Postgres-XC

       CREATE NODE GROUP is new SQL query specific to Postgres-XC since 0.9.7 that creates node
       group information in catalog pgxc_group.

       CREATE NODE only runs on the local node where it is launched.

PARAMETERS

       groupname
           The name of the selected cluster node group.

       nodename
           The name of a cluster node.

NOTES

       A group of nodes works as an alias for node lists when defining tables on sub-clusters.
       Only Datanode can be included in node groups.

EXAMPLES

       Create a cluster node group made of nodes called Datanode1, Datanode2.

           CREATE NODE GROUP cluster_group WITH Datanode1, Datanode2;

COMPATIBILITY

       CREATE NODE GROUP does not conform to the SQL standards, it is a Postgres-XC specific
       command.