April 2016
Beginner
268 pages
5h 32m
English
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Dropping a database schema
In this recipe, you will learn how to drop a database in Hive.
Getting ready
Drop Database statements drop the database and the objects inside that database. When a database is dropped, its directory is also deleted. The general format of dropping a database is as follows:
DROP (DATABASE|SCHEMA) [IF EXISTS] database_name [RESTRICT|CASCADE];
Where:
DATABASE|SCHEMA: These are the same thing. These words can be used interchangeably.[IF EXISTS]: This is an optional clause. If not used, an error is thrown when there is an attempt to drop a database that does not exist.[RESTRICT|CASCADE]: This is an optional clause.RESTRICTis used to restrict the database from getting dropped if there are one or more tables present in the database. ...
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