Table in report based on metric data

Question

Hi!
I want to add a simple table to report, showing the data from the metric I have in my plug-in. The metric has near 50 columns.
As far as I understand, I need to write SQL statement that selects from mgmt$metric_current view.
The problem is that the data is presented 'vertically' in this view, meaning that I have one column with metric column name and another with metric column value, so if I want to get a table that represent my metric I need to write 50 inner joins in my SQL statement, which is extremely unefficient.
Is there any other way to select metric current data in an efficient way?
Thanks in advance,
Alex.

Answer 1

Alex,
You do have to write a query to join across MGMT$METRIC_CURRENT to get multiple metric columns into a table.
But for a reasonably sized table (column-wise), the performance should be fine. Why would you want to have
a table with 50 columns? You'd have your end user doing quite a bit of horizontal scrolling all of the time; that
wouldn't be very usable. Perhaps the better approach would be to have a number of tables with selected columns
in each that are closely related. It seems that even regardless of this, that 50 columns is a lot in a single metric.
Would it also make sense to break this metric up for usability as well? If so and you had originally put all 50 columns
in a single metric for performance reasons (i.e. perhaps the overhead to connect to the source is big), you could
keep that big metric as is, and have sifferent aggregate metrics that just consist of particular subsets of the
columns. These aggregate metrics aren't "collected" like the base one.
Dave