PARTITIONS
Displays partition metadata, one row per partition key, per ROS container.
Displays partition metadata, one row per partition key, per ROS container.
Column Name | Data Type | Description |
---|---|---|
PARTITION_KEY |
VARCHAR | The partition value(s). |
PROJECTION_ID |
INTEGER | Unique numeric ID assigned by the Vertica catalog, which identifies the projection. |
TABLE_SCHEMA |
VARCHAR | The schema name for which information is listed. |
PROJECTION_NAME |
VARCHAR | The projection name for which information is listed. |
ROS_ID |
VARCHAR | A unique numeric ID assigned by the Vertica catalog, which identifies the ROS container. |
ROS_SIZE_BYTES |
INTEGER | The ROS container size in bytes. |
ROS_ROW_COUNT |
INTEGER | Number of rows in the ROS container. |
NODE_NAME |
VARCHAR | Node where the ROS container resides. |
DELETED_ROW_COUNT |
INTEGER | The number of deleted rows in the partition. |
LOCATION_LABEL |
VARCHAR | The location label of the default storage location. |
Notes
-
A many-to-many relationship exists between partitions and ROS containers. PARTITIONS displays information in a denormalized fashion.
-
To find the number of ROS containers having data of a specific partition, aggregate PARTITIONS over the
partition_key
column. -
To find the number of partitions stored in a ROS container, aggregate PARTITIONS over the
ros_id
column.