__gp_aovisimap(regclass)
This function returns the tuple ID, the segment file, and the row number of each non-visible tuple according to the visibility map.
The input argument is the name or the OID of an append-optimized table.
| Column | Description |
|---|---|
tid |
The tuple ID |
segno |
The number of the segment file |
row_num |
The row number of a row that has been deleted or updated |