Help Center/ GaussDB(DWS)/ SQL Syntax Reference/ SQL Syntax Reference (8.1.3.x)/ Functions and Operators/ Database Object Functions/ Partition Management Function
Updated on 2024-09-03 GMT+08:00
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Partition Management Function

proc_add_partition (relname regclass, boundaries_interval interval)

Description: Adds partitions to a table with the automatic partition creation function enabled.

Return type: void

Note: When the function is executed, multiple partitions with time range as boundaries_interval are created based on the existing partition boundary until new_part_boundary – now_time >= 29 * boundaries_interval. Then, an extra partition is created to ensure that at least a new partition is created when the function is executed.

Example:

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call proc_add_partition('my_schema.my_table', interval '1 day');
 proc_add_partition
--------------------

(1 row)

proc_drop_partition (relname regclass, older_than interval)

Description: Deletes partitions from a table with the automatic partition deletion function enabled.

Return type: void

Note: When this function is executed, all partitions in the table are traversed and the partitions whose boundary is smaller than now_time - older_than are deleted. If all partitions meet the deletion condition, the table is truncated with one partition kept.

Example:

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call proc_drop_partition('my_schema.my_table', interval '7 day');
 proc_drop_partition
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(1 row)