Grants a role query access to a node.
Note that by default a new node provides open query access to all roles. However, once a node has been granted one or roles the node becomes limited to query access only to those roles.
Available in a network database and requires the star$grant role.
|node$||Mandatory||Text||Node to grant query access to|
|role$||Mandatory||Text||Role to be granted|
SELECT grant_node('mynode','myrole'); -- grants role 'myrole' query access to node 'mynode'.