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luhuayi 177cd61a57 DWS DEVG 910.211 version

Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: luhuayi <luhuayi@huawei.com>
Co-committed-by: luhuayi <luhuayi@huawei.com>

2025-05-05 07:44:03 +00:00

DROP TABLE

DROP TABLE deletes a specified table.

DROP TABLE forcibly deletes a specified table. After a table is deleted, any indexes that exist for the table will be deleted; any functions or stored procedures that use this table cannot be run. Deleting a partitioned table also deletes all partitions in the table.
Only the table owner, schema owner, or a user granted with the DROP permission can run DROP TABLE on a table. A system administrator has this permission by default. To delete all the rows in a table but retain the table definition, use TRUNCATE or DELETE.

Be cautious when using DROP OBJECT (e.g., DATABASE, USER/ROLE, SCHEMA, TABLE, VIEW) as it may cause data loss, especially with CASCADE deletions. Always back up data before proceeding.
For more information about development and design specifications, see "GaussDB(DWS) Development and Design Proposal" in the Data Warehouse Service (DWS) Developer Guide.

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DROP TABLE [ IF EXISTS ] 
    { [schema.]table_name } [, ...] [ CASCADE | RESTRICT ] ;

IF EXISTS
Sends a notice instead of an error if the specified table does not exist.
schema
Specifies the schema name.
table_name
Specifies the name of the table.
CASCADE | RESTRICT
- CASCADE: automatically deletes objects (such as views) that depend on the table to be deleted.
- RESTRICT (default): refuses to delete the table if any objects depend on it. This is the default.

Delete the warehouse_t1 table:

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DROP TABLE tpcds.warehouse_t1;

Parent topic: DDL Syntax