Help Center/ GaussDB/ Feature Guide(Centralized_8.x)/ Partitioned Table/ Partitioned Table O&M Management/ DROP PARTITION/ Deleting a Partition from a Level-2 Partitioned Table
Updated on 2024-06-07 GMT+08:00
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Deleting a Partition from a Level-2 Partitioned Table

You can run ALTER TABLE DROP PARTITION to delete a range or list partition from a level-2 partitioned table. The database deletes the partition and all level-2 partitions under the partition.

For example, delete the partition date_202005 from the level-2 partitioned table range_list_sales by specifying the partition name and update the global index. 
ALTER TABLE range_list_sales DROP PARTITION date_202005 UPDATE GLOBAL INDEX;
Alternatively, delete a partition corresponding to the partition value ('2020-05-08') in the level-2 partitioned table range_list_sales. Global indexes become invalid after this command is executed because the UPDATE GLOBAL INDEX clause is not used. 
ALTER TABLE range_list_sales DROP PARTITION FOR ('2020-05-08');
  • If a level-2 partitioned table has only one partition, the partition cannot be deleted by running the ALTER TABLE DROP PARTITION command.
  • If the level-1 partition policy of a level-2 partitioned table is HASH, the partition cannot be deleted running the ALTER TABLE DROP PARTITION command.
Parent topic: DROP PARTITION