__gp_aovisimap_entry(regclass)
This function returns information about each visibility map entry for the table.
The input argument is the name or the OID of an append-optimized table.
| Column | Description |
|---|---|
segno |
Segment number of the visibility map entry |
first_row_num |
The first row number of the entry |
hidden_tupcount |
The number of hidden tuples in the entry |
bitmap |
A text representation of the visibility bitmap |