DROP_PARTITIONS

Drops the specified table partition keys.

This is a meta-function. You must call meta-functions in a top-level SELECT statement.

Behavior type

Syntax

DROP_PARTITIONS (
    '[[database.]schema.]table-name',
    'min-range-value',
    'max-range-value'
    [, 'force-split']
)

Parameters

[database.]schema

Database and schema. The default schema is public. If you specify a database, it must be the current database.

table-name

The target table. The table cannot be used as a dimension table in a pre-join projection and cannot have out-of-date (unrefreshed) projections.

min-range-value max-range-value

The minimum and maximum value of partition keys to drop, where min-range-value must be ≤ max-range-value. To drop one partition key, min-range-value and max-range-value must be equal.

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:

• true: Split ROS containers as needed.

• false (default): Return with an error if ROS containers must be split to implement this operation.

Note

In rare cases, DROP_PARTITIONS executes at the same time as a mergeout operation on the same ROS container. As a result, the function cannot split the container as specified and returns with an error. When this happens, call DROP_PARTITIONS again.

Privileges

One of the following:

• DBADMIN

• Table owner

• USAGE privileges on the table schema and TRUNCATE privileges on the table

Examples

See Dropping partitions.

See also