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FAQ
Delete external table definitions.
DROP EXTERNAL [WEB] TABLE [IF EXISTS] name [CASCADE | RESTRICT]
DROP EXTERNAL TABLE Deletes existing external table definitions from the database system. External data sources or files will not be deleted. To execute this command, you must be the owner of the external table.
WEB
IF EXISTS
name
CASCADE
RESTRICT
Delete an external table named staging (if it exists):
DROP EXTERNAL TABLE IF EXISTS staging;
There is no DROP EXTERNAL TABLE statement in the SQL standard.