gp_distribution_policy
gp_distribution_policy#
The gp_distribution_policy table contains information about OushuDB tables and their policy for distributing table data across the segments.
column |
type |
references |
description |
|---|---|---|---|
|
oid |
pg_class_internal.oid |
The table object identifier (OID). |
|
char |
The table distribution policy: only p is valid for now - Partitioned policy. Table data is horizontally partitioned to severals buckets. |
|
|
int |
Number of hash buckets used in creating a hash-distributed table or for external table intermediate processing. |
|
|
int2vector |
pg_attribute.attnum |
The column number(s) of the distribution column(s). |
|
oidvector |
pg_opclass.oid |
The operator class identifier(s) of the distribution column(s). |