A drill-down checked against the columns of the run it expands (the
capture node's schema): the levels and aggregations it can use, and a
message for each it can't. A level or an aggregation that can't be used is
left out of the derived queries, never the whole drill-down, so the cube
still runs (PLAN §11.10).
A drill-down checked against the columns of the run it expands (the capture node's schema): the levels and aggregations it can use, and a message for each it can't. A level or an aggregation that can't be used is left out of the derived queries, never the whole drill-down, so the cube still runs (PLAN §11.10).