Write results into a specified table. Result is transient, lives only for the duration of the pipeline calculation. This node is only used to break up or un-nest calculations, not for value sharing or re-use.
materialize_node(source,
table_name = (wrapr::mk_tmp_name_source("rquerymn"))())source to work from (relop node)
character, name of caching table
relop materialize_node
Note this node can not be used in multiple paths in the same rel_op tree as it re-uses table names and re-computes each time called.