The group_union node
This node is used to terminate and 'un-group' a grouped dataflow. It must be placed after a group_by
node.
The group_union node acts as a union for grouped dataflows.
If this node is used without a group_by
node, it will have no effect at all on the data-flow.
Note: The behaviour of using more than 1
group_union
node within a flow is not defined.
See group_by
Examples
|group_by('fieldname1')
%% 1 debug-node per group
|debug()
|group_union()
%% end of grouping
|debug()
An instance of the first debug node wil be started for every group, the second one will exist only once.