To view catalog statistics for a single table, index, or table function in a graph, double-click on its node.
To view catalog statistics for multiple tables, indexes, or table functions in a graph, select each one by clicking on it (the color changes); then select Node->Show statistics.
Alternatively, you can use the pop-up menu and select Show statistics.
You may choose only tables, indexes, or table functions. If you choose any operators, the Show statistics action will be unavailable.
A Statistics window opens for each of the selected objects, displaying information about the statistics that were in effect at the time the snapshot was created, as well as those that currently exist in the system catalog tables.
If STATS_TIME under the Explained column contains the entry "Statistics not updated", then no statistics existed when the optimizer created the access plan. Therefore, if the optimizer required certain statistics to create an access plan, it used defaults. If default statistics were used by the optimizer, they are identified as "default".