MOVE_PARTITIONS_TO_TABLE
Moves partitions from one table to another.
Syntax
MOVE_PARTITIONS_TO_TABLE ( '[[database.]schema.]source‑table', 'min‑range‑value', 'max‑range‑value', '[[database.]schema.]target-table' [, force‑split] )
Parameters
[database.]schema |
Specifies a schema, by default myschema.thisDbObject If you specify a database, it must be the current database. |
source‑table | The source table of the partitions to move. |
min‑range‑value
max‑range‑value |
The minimum and maximum value of partition keys to move, where min‑range‑value must be ≤ max‑range‑value. To move one partition, min‑range‑value and max‑range‑value must be equal. |
target‑table |
The target table of the partitions to move. If the table does not exist, Vertica creates a table from the source table's definition, by calling |
force‑split |
Optional Boolean argument, specifies whether to split ROS containers if the range of partition keys spans multiple containers or part of a single container:
|
Privileges
If the target table does not exist, you must have CREATE privileges on the target schema, to enable table creation. One of the following conditions is also required:
- DBADMIN role
- Owner of the source and target tables
- USAGE privileges on source and target schemas,TRUNCATE privileges on the source table, and INSERT privileges on the target table
Table Attribute Requirements
The following attributes of both tables must be identical:
- Column definitions, including NULL/NOT NULL constraints
- Segmentation
- Partition clause
- Number of projections
- Projection sort order
- Primary and unique key constraints. However, the key constraints do not have to be identically enabled. For more information on constraints, see Constraints in the Administrator's Guide.
If the target table has primary or unique key constraints enabled and copying or moving the partitions will insert duplicate key values into the target table, Vertica rolls back the operation.
- Check constraints. For
MOVE_PARTITIONS_TO_TABLE
andCOPY_PARTITIONS_TO_TABLE
, Vertica enforces enabled check constraints on the target table only. ForSWAP_PARTITIONS_BETWEEN_TABLES
, Vertica enforces enabled check constraints on both tables. If there is a violation of an enabled check constraint, Vertica rolls back the operation. - Number and definitions of text indices.
Table Restrictions
The following restrictions apply to the source and target tables:
- If the source and target partitions are in different storage tiers, Vertica returns a warning but the operation proceeds. The partitions remain in their existing storage tier.
- The following tables cannot be used as sources or targets:
- Temporary tables
- Virtual tables
- System tables
- External tables
MOVE_PARTITIONS_TO_TABLE returns an error if both of the following conditions are true of the source table:
- The table's partition expression includes a GROUP BY clause—for example, hierarchically partitioned tables.
- The table has projections that aggregate data—for example, live aggregate or Top-K projections.
Examples
See Archiving Partitions.