Statistics descriptor
An access method returns statistics to the UPDATE STATISTICS statement in a statistics descriptor, or MI_AM_TSTATS_DESC structure. The database server copies the separate values from the statistics descriptor to pertinent tables in the system catalog.
The following accessor functions set information in the
statistics descriptor.
| Accessor function | Value set |
|---|---|
| mi_tstats_setnpages() | The number of pages that the table uses |
| mi_tstats_setnrows() | The number of rows in the table |