hypertable_detailed_size()

Get detailed information about disk space used by a hypertable or continuous aggregate, returning size information for the table itself, any indexes on the table, any toast tables, and the total size of all. All sizes are reported in bytes. If the function is executed on a distributed hypertable, it returns size information as a separate row per node, including the access node.

Note

When a continuous aggregate name is provided, the function transparently looks up the backing hypertable and returns its statistics instead.

For more information about using hypertables, including chunk size partitioning, see the hypertable section.

Note

If executed on a relation that is not a hypertable, the function returns NULL.

Get the size information for a hypertable.

-- disttable is a distributed hypertable --
SELECT * FROM hypertable_detailed_size('disttable') ORDER BY node_name;

 table_bytes | index_bytes | toast_bytes | total_bytes |  node_name
-------------+-------------+-------------+-------------+-------------
       16384 |       40960 |           0 |       57344 | data_node_1
        8192 |       24576 |           0 |       32768 | data_node_2
           0 |        8192 |           0 |        8192 |

Copy

The access node is listed without a user-given node name. Normally, the access node holds no data, but still maintains, for example, index information that occupies a small amount of disk space.