- Seq Scan on routing: Seq Scan =
Sequential Scan. Combines TableScan
and SelectScan. Read the table, and filter rows using a
predicate.
- cost=...: Estimated cost (unclear what the unit is).
- rows=...: Estimated number of rows of output.
- width=...: Estimated average row width, in bytes.
- Filter: The predicate used to filter rows.