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Run the following statement to delete database testdb if it exists: 1 DROP DATABASE IF EXISTS testdb; Parent topic: Databases
Deleting an Enhanced Datasource Connection Scenario Delete an enhanced datasource connection that is no longer used on the console. Procedure Log in to the DLI management console. In the left navigation pane, choose Datasource Connections.
`obs://bucket_name/tbl_path` [RETAIN num HOURS]; You can simulate the execution of the vacuum operation using the DRY RUN parameter, which returns a list of files that the vacuum will delete: VACUUM[database_name.]table_name|DELTA.
Deleting a Function Function This statement is used to delete functions. Syntax 1 DROP [TEMPORARY] FUNCTION [IF EXISTS] [db_name.] function_name; Keywords TEMPORARY: Indicates whether the function to be deleted is a temporary function.
This step describes how to delete a partition by specifying filter criteria. If you want to delete a partition without specifying filter criteria, see Deleting a Partition. This example cannot be used together with that in Deleting a Partition.
delete Metadata services provided by LakeFormation.
If UPDATE or DELETE is executed for the table matching the join condition, and INSERT is executed if the join condition is not met. This command completes the synchronization requiring only one full table scan, delivering higher efficiency than INSERT plus UPDATE.
You can delete the comment by setting the comment information to NULL. Example Change the comment of the users table to "master table". You can run the show create table tablename statement to view the comment. COMMENT ON TABLE users IS 'master table'; Parent topic: DDL Syntax
Example Creating a View create view orders_by_date as select * from orders; Delete the orders_by_date view. If the view does not exist, an error is reported. DROP VIEW orders_by_date; Delete the orders_by_date view. Use the IF EXISTS parameter.
Run the following statement to delete table test from the current database: 1 DROP TABLE IF EXISTS test; Parent topic: Tables
URI POST /v3/{project_id}/{resource_type}/{resource_id}/tags/delete Table 1 URI parameters Parameter Mandatory Type Description project_id Yes String Project ID, which is used for resource isolation.
Scenario User A created the testTable table in a database through a SQL job and granted user B the permission to insert and delete table data. User A deleted the testTable table and created a new testTable table.
Although views and tables have many common points, the DROP TABLE statement cannot be used to delete views. Precautions The to-be-deleted view must exist. If you run this statement to delete a view that does not exist, an error is reported.
For example, if you delete hourly billed resources at 08:30:00, fees incurred between 08:00:00 and 09:00:00 are usually deducted around 10:00:00.
To delete them, you need to execute a DROP statement separately.
Deleting an Enhanced Datasource Connection Function This API is used to delete an enhanced datasource connection. The connection that is being created cannot be deleted.
After the multiversion function is enabled, the system automatically backs up table data when you delete or modify the data using insert overwrite or truncate, and retains the data for a certain period. You can quickly restore data within the retention period.
DROP COLUMN command is used to delete a column. Syntax ALTER TABLE tableName DROP COLUMN|COLUMNS cols Parameter Description Table 1 DROP COLUMN parameters Parameter Description tableName Table name. cols Columns to be deleted. You can specify multiple columns.
DROP COLUMN command is used to delete a column. Syntax ALTER TABLE tableName DROP COLUMN|COLUMNS cols Parameter Description Table 1 DROP COLUMN parameters Parameter Description tableName Table name. cols Columns to be deleted. You can specify multiple columns.
You cannot delete databases that contain tables. To delete a database containing tables, delete the tables first. In the displayed dialog box, click Yes. Parent Topic: Managing Database Resources on the DLI Console
